FitBit Charge 4 Ultimate Sleep Test

[@TheQuantifiedScientist]

*Subscribe to my weekly Newsletter(!)* on www.robterhorst.com Instagram: instagram.com/quantified_scientist/ Twitter: @QuantifiedRob 👇Amazon Affiliate links, support the channel!👇 Fitbit Charge 4: geni.us/wjAfjU Of course, only buy it if it makes sense for you!👍

[@ChrisGullick]

71% accurate. That'll explain why sometimes I wake feeling like I've had a good nights sleep but the Fitbit says otherwise and vice versa

[@andrewhwang2910]

Rigorous, clear, succinct, highly informative, and funny. Thank you for producing the best content on KZbin.

[@vagabondsteve]

I LOVE this channel! You’ve saved us so much time and money.

[@TheQuantifiedScientist]

Thanks for the compliment Steve! Really appreciate it! Have a great day

[@mohammedmahdi4976]

"Well first thanks for remembering my name" you crack me up Rob 😂 Nice informative video.

[@bskilla4892]

My new favorite channel on KZbin. Such a light in this world. Thanks.

[@biesman5]

Hey, I was wondering if you used the "sensitive" or "normal" setting from the sleep sensitivity settings? Also, did you use it on your non-dominant hand? Thanks for the video!!

[@olivergottbehut8087]

I watched alot videos. You're a one of a the few Gems on YT. Greetings from germany

[@anoniem012]

Peace, so underrated channel.. :D

[@TheQuantifiedScientist]

Thanks for your comment Tarik! Enjoy your day!

[@anoniem012]

@@TheQuantifiedScientist Thank you, I wish the same for you brother. I was always looking for a channel like this (about reality vs commercial comparisons). I would like to encourage you to look for the reason why we as humans are here on the world, and what our goal here is and what will happen when we are dead. Look from 04:20 onwards kzbin.info/www/bejne/pHrFn4iDprGEbZo Take up with the videos you have a subscriber more haha! :)

[@rajv7343]

you r providing great insights on these devices, can you please also do one on vivosmart 4. If you can also perform testing on HR, O2 and Sleep accuracy. it would be great!

[@TheQuantifiedScientist]

Hi Raj, I will do my best to do that after the Corona-crisis! In the meantime I hope you will enjoy my other videos! Have a great day!

[@diagonir]

Excellent job with how deep your tests are! Funny how you smile at the beginning of each cut (love it though)

[@markknight2768]

Could you add the Charge 4 to the sleep graph you use for all your tests to show where it ranks against the others? Thx and keep up the great reviews and tests!

[@iTrollalott]

Thank you for all your hard work. Really appreciate a scientific analysis on all these products. Issue that I have with the Fitbit is that their straps are weak and break over time. I prefer not to keep replacing my bands every 3 months. Have you found a long-term solution?

[@ppvl]

Thank you Rob ;-) for another great review. I'm surprised you sleep at all wearing an EEG monitor and several smart watches to bed. Now I'm off to go and buy my Charge 4.

[@FitsmartNow]

hartstikke goed. dank je voor alle moeite en de uitleg. ik gebruik suunto op het moment - maar het geeft geen cycles. ik hoop dat ze de oura verbeteren. veel veel dank

[@raymondbavaro5911]

Not so happy with the sleep tracking. I find it difficult to wear something on my wrist to sleep, but it has been helpful. Seems it doesn’t start tracking sleep until an hour after I am sleeping. The metrics showed I sleep mostly in light, like you said. This was not the reason I purchased the tracker, so it was helpful to see your confusing statistics. As I have been exercising at home, I am happy with the results overall and appreciate your scientific approach.

[@got4boyz]

I wish I lived in Vienna and was much younger because you are adorable, smart and good sense of humor. ;)

[@TheQuantifiedScientist]

Wow, thank you Beth 😊!

[@gokufrost]

This guy doing so much work for reviews 🙏

[@JakeXSV]

What an amazingly in-depth review. Great work!

[@TheQuantifiedScientist]

Thanks Jake! Have a great day!

[@Meraj_am]

Can’t wait for the charge 4 sleep results

[@TheQuantifiedScientist]

Thanks Meraj!

[@rmjormjo]

Thank you Rob, to suffer for us, the find the optmal sleep tracker. We decided for a Garmin watch, a Fitbit charge 4, Muse S EEG, and manual recording, and we are waiting for your review from you about a do it yourself EEG device based on OpenBCI, which we suppose will be the best among the affordable devices. We will rebuild it, if it is worth to do it. A combination of several devices will give the optimum for sleep duration, which is an important parameter for mediators and researchers.

[@greenfoodcrush2602]

This video was awesome AND it made me chuckle a couple times! Thanks so much for all of your hard work, love it!

[@albertotognoli7107]

Great quality video thank you KZbin ideas: charge 5 sleep and Hearth rate accuracy review

[@fujihobo]

Wow! Great analytical data you provided. Thank you so much!!!!

[@TheQuantifiedScientist]

You're very welcome! And thanks for your comment! Have a great day😄

[@sep69]

Thanks you all these great video's reviewing fitness trackers ! You sure put an effort in it :) I'm looking to buy a charge 4 so your experiments are very informative. Keep up the good work ! Groetjes uit Nederland :)

[@glenvest5256]

Another great vid. Keep up the wonderful work ! I love the emphasis on data collection AND interpretation!!!

[@vinsibil2520]

What would you say the most accurate wrist watch for sleep accuracy is then?

[@motitei97]

Basically there is no difference between charge 2 sleep tracker accuracy and charge 4. Thank you for this video , i just bought a fitbit charge 2 :)

[@TheQuantifiedScientist]

Hi Dragon, based on what I've seen so far, I would say, yes. I'm actually doing an analysis now comparing them directly, so stay tuned for that. Hopefully you'll enjoy your new fitbit! Have a wonderful day!

[@TheQuantifiedScientist]

And, thanks for your comment!

[@matrhein]

No worries, man! I am getting pretty fluent in confusion matrix interpretations through your videos ;-)

[@TheQuantifiedScientist]

Excellent! Thanks Mathias!

[@saurabhkhandelwal7895]

Great video I bought a charge 4only for sleep tracking yesterday

[@londonman]

I enjoyed this. This man has style.

[@milango01]

THank you again. I am also a FITBIT lover. Using CHarge 2 HR for 4+ years now.. changed the straps though. Its doing well, though needs. more ferquent charging and some times sleep tracking goes to old mode of 2 coloured line graphs only. That's not really helpful. I bought Huwaei Band 6, reasonably good, but I couldn't like their app fucntions, UI etc. It lacked staircase climbing, so I am forced to return the Huwaei. Looking to CHARGE HR 5 model sooner.. though HR 4 might also fit my needs.. Let me wait to see HR 5 and then decide. Can you throw more light on VO2 max graphs and HRV, Sleeping HR rate patterns please. I am 59 yrs, looking to maintain my heart and sleep patterns well with good health. Thank you again.

[@wonderwoman5528]

Really appreciate the effort that has gone into making this video, thanks you! :)

[@Sinentror]

Which is the best fitness tracker for tracking the sleep? Can you do a video for this? A ranging maybe

[@TheQuantifiedScientist]

Hi Sinentror, sounds like a good idea! I'll look into this once I have collected data on a few more trackers! thanks for the suggestion :-)

[@huntress44]

Last Fitbit that I had was 2 and it worked quite well. I'm gonna buy this to track my sleep during the day as I'm on permanent night shift. I wonder if it will perform differently. Thank you for the review

[@Eddenhertog]

"I'm still singleeee..... verschrikkelijk" Verander nooit 🤭✊

[@doctorlovera]

Great analisys. I just got the Huawei Band 4 pro and I think it underestimates the awake time. Kinda dissapointed. I think it also overestimates the step count.

[@TheQuantifiedScientist]

Thanks man! If you are interested in step count, I made a video about that too: kzbin.info/www/bejne/Y4WVqamNppqYadE . Overestimation of steps is indeed a common thing. Fitbits do it too.

[@stareenafraser]

Thaks for sharing , especially the heaps of fitbit, i have a graveyard of some charge 2 as well. The customer service is so good. Im thinking about buying the charge 3 or the charge 4

[@FredyUs]

wow.. thanks for review sleep monitor. I hope someday I can collaborate with you

[@KasperKillingmoe]

Great work! Subscribed. Would love to see a similar test of Garmin Sleep tracking.

[@TheQuantifiedScientist]

Thanks for the sub! Yes, I will test the Garmin Venu Sq for sleep tracking :-D

[@jemarcot]

This guy is so great. Funny and very informative.

[@SaraTube01]

Extremely insightful! Thank you very much! I was wondering how would Mi Band 5 performance would look like compared to this!

[@EMARTRAHOBBY]

7.03 now i see the real three hand sign used by your country same like German. I am very admire.

[@conspiritor2]

You have interesting since going on there. Keep it up! Is there any commercial sleep tracker that detects that you are awake if you just laying still?

[@TheQuantifiedScientist]

Hi! Yes, EEG monitors should be better at this (if they have a good algorithm), the Dreem 2 Headband might be an option: kzbin.info/www/bejne/aXvSqYuMiqdlg9E . thanks for commenting!

[@eldavimost]

Normalizing the results in the confusing matrix to amount for 100% on each column, the Charge 4 agrees with the EEG in: 56.68% for deep sleep 82.54% for light sleep 75.33% for REM 11.86% for awake That's an average of 56.6% of the 4 stages with 11.86% agreement in the worst sleep stage (as he uses for measures comparison charts in other videos).

[@RushMcPato]

Hi Rob, what does it break on the watches? Is it the strap or the device ? Amazing tests. Thank you!

[@primitivemedia1515]

your killing it ! keep up the good work

[@Chez114]

First time watching your channel. You're such a nice dude

[@TheQuantifiedScientist]

Hi Chesrae Martin! Thanks so much or the compliment. Hopefully I can provide you with many more cool videos in the future :-) . Have a wonderful day!

[@Chez114]

@@TheQuantifiedScientist Thank you :) I'm sure you'll have no problem and I will continue to support your channel. Really appreciated your reply. I didn't expect that

[@TheQuantifiedScientist]

@@Chez114 Thanks so much! In the meantime, enjoy your day!

[@MindbodyMedic]

I hope fitbit sent you some freebies cause I just decided to buy a charge 4 based on this. right price/value point for me coupled with performance and battery.

[@lawlesskm]

Great presentation! You have a wonderful demeanor.

[@blacksir06]

I like your work very much. It would be great if there was a similar work for the Xiaomi Mi Band 3 or 4

[@roxbittman]

Thank you! This answered a question I had. Glad you researched it!

[@TheQuantifiedScientist]

Glad it was helpful! Thanks so much for the compliment Roxanne!

[@boby]

Nice one, can you also test honor band 5 and mi band 4 , they say band 5 is much more accurate about the sleep.

[@TheQuantifiedScientist]

Hi! Thanks for your comment! I did look at the Mi Band 3 a little bit, which was not very good from what I remember. the others I indeed need to check out! Thanks

[@amaella1]

I would also be interested. Huawei & honor have their "trusleep" feature which claims to be accurate and even tested by hardvard uni. Also in the app itself there are several references to scientific articles and it gives personalized tips. I have the huawei gt2 42mm and find that the way it tracks my sleep seems accurate, but no way to test it! Had the cheap honor band 5 for a few days and the results were pretty much the same, but had to give up on it as it did not fit my wrist at all.

[@TheQuantifiedScientist]

@@amaella1 Thanks for the suggestion! I'll see if I can test it at some point! HAve a great day!

[@alexandersloan53]

Apple Watch please!!! Love your videos.

[@TheQuantifiedScientist]

Thanks Alexander! I am waiting for the new Apple Watch/WatchOS which should have sleep tracking build in. After that is released I can hopefully test it :-D. Have a great day!

[@alextruong27]

your contents are sooo great. Just a small tip, I think you should invest in a better mic and some foam acoustic panels to reduce echo! :D

[@TheQuantifiedScientist]

Thanks Alex! Yes, you're right, I have a really basic mic and camera. I'd love to upgrade at some point!

[@FabioxARG]

@@TheQuantifiedScientist It's not too bad, it kinds of gives it a warm "homemade" touch.

[@TheQuantifiedScientist]

Fabian Ariel , thanks a lot! Have a great day!

[@Nikolateslaa11235]

I would be nice if you could compare the other fitbit functions to the professional devices

[@TheQuantifiedScientist]

Thanks Simon! I might just do that :-). I did to a step counting video if you're interested: kzbin.info/www/bejne/Y4WVqamNppqYadE

[@executivelifehacks6747]

The tumbleweed, classic!

[@TheQuantifiedScientist]

Thanks!😄

[@잇비-l8s]

thank you for very detailed review. i would be happy to see review about Suunto items regarding sleep test :) have a nice day

[@digitalworkshop]

Great content. Very informative. Loved it. Definitely you should have a lot lot more views and subscribers. I would request you to please do a review of Honor band 5 sleep tracking. I read that Huawei trusleep sleep tracking is far superior than many other competing brands. Would be great to see your take on other sleep tracking devices other than Fitbit. Also if Fitbit justifies the price tag they carry. Thank you. Keep up the good work.

[@TheQuantifiedScientist]

Great suggestion! I am hoping to do a few nights in the sleep lab while testing several devices somewhere in Sept/Oct if I can travel again :-) . Have a great day!

[@mateuszkochel3782]

Hi, I love your chanel, you're doing fantastic job. I have question about best smartwatch/smartband for sleep tracking. Which has best accuracy and you recommend it the most? (price has less less meaning) Or it is better to buy tool dedicated to sleep tracking?

[@Cristian-mi7ur]

thank you very much excellent contribution !! I am happy with my charge 2: D

[@TheQuantifiedScientist]

Thanks so much for the compliment! You are welcome! I also made a video about the charge 2, in case you are interested: kzbin.info/www/bejne/i3LGkqZ8g9-Iopo . Have a great day!

[@scottsworld]

Can you do an Apple Watch review? And how about a iOS “sleep cycle” App review?

[@TheQuantifiedScientist]

Thanks for the comment Scottsworld, I have been thinking about getting an Apple watch for a while, but it is quite an investment, so that is holding me back a bit. The sleep cycle app should be easier to do, I'll consider that one for sure! Thanks :-D

[@shorty2802]

Also, the Apple Watch battery life just doesn’t make sleep tracking feasible. Perhaps with the watch 6...

[@TheQuantifiedScientist]

@@shorty2802 thanks for the comment, good to know! Have a great day!

[@kayleighleigh5106]

I would love an Apple Watch comparison review. Love this channel, super informative!

[@feniks6000]

Really love you channel! Amazing scientific and yet easy to understand content. I want to get a sleep tracker to see how many sleep cycles I through go each night. What sleep tracker (under 200 bucks) would you recommend for this? Also, are you Dutch? I was convinced you were at first but cannot tell anymore🙈

[@melvinch]

He said he's from Vienna in another video.

[@sarahgardner8856]

Love the detail in this review. Thank you

[@silastube_]

Can you do the same kind of test with Apple Watch and share the result, please?

[@TheQuantifiedScientist]

Hi Silas, thanks for the suggestion, I'll keep it in mind ;-). Have a great day

[@manrajmudan2181]

Great informational video! What would you suggest the best health and sleep tracker currently available?

[@TheQuantifiedScientist]

Hi Manraj! Thanks for your good question. So, I would say as an allround fitness tracker and sleep tracker, I would choose a FitBit. However, for pure sleep tracking you might want to go with a dedicated sleep EEG. The Dreem 2 headband seems quite good for this, though I have not tried it yet myself (hopefully soon). I might make a video about my opinion on this subject soon :-D

[@flyingsausage5827]

So which device in the end is worth spending my money on for sleep tracking. Smart watches? Under the mattress sleep tracking device? Which brand?

[@mihaisau7999]

That is a really good analysis.

[@MslaCrissy]

Great video. Just wondering whether you could do a video on weight scales and their accuracy? Not many videos out there regarding this. Main interests are: Withings Body+, Fitbit Aria, and other Scales versus a validated weight scale? Including the Dexa Scan (not sure which is the most trusted, but I presume the Dexa Scan is). Thank you.

[@FiaGUmp]

Thank you for this lovely test!! Please try Polar and Garmin sleep tracking too! Please please please : )

[@TheQuantifiedScientist]

Hi Sofia! Thanks for your suggestions, I will do my best and see if I can do it! Which specific models were you thinking of?

[@SantQiu]

@@TheQuantifiedScientist +1 To test the sleep tracking on Garmin (& Polar) as it seems they're more accurate fitness/activity trackers compared to Fitbit. It'd be great if you can do at least the Garmin latest models. Thanks

[@TheQuantifiedScientist]

@@SantQiu Thanks Sant for the suggestions!

[@linkingconcept]

Thanks for the research. I just need it now.I bought an iPhone watch s7 but the Sleep monitor apps are stupid and expensive. So I’m trying to get a fitbit only used to monitor my sleep. Well, I had an ionic too but they just recalled it. It’s now only good as a souvenir. So your suggestion for the sleep tracking purpose only would be a charge 3?

[@Kaepsele337]

Would be interesting to know how it performs if you have trouble sleeping. Or in general if the accuracy depends on sleep habits.

[@coffeenciggy]

The data is super sexy and the scientist is easy on the eye! Thanks for the data!!!

[@bskilla4892]

If the accuracy is 71% overall (guessing average), what's the standard deviation per parameter? (I.e., deep, rem, etc.) Could you make a little calculator or provide the data so that I could find, for example, the likelihood of my fit bit being 10% wrong in regards to REM sleep for a given night. I'd like to know how much I can trust it. Sometimes it says I slept well, but I feel awful and vice versa.

[@dave9547]

The Taylor swift joke was quality 👌

[@TheQuantifiedScientist]

Thanks Dave!

[@mohamadhasbini7960]

Please can you do more tests on the xiaomi band 7 specially the step count i think it is way optimistic

[@markbo4931]

FitBit Charge 5 hopefully not a small Sence with the same bad Heart rate Detection. I use after your recomendation de Inspire 2 and after some adjustment for better sleep (same bed time no coffe after .. etc. ) I feel (Bio feedback) and see at the diagramm double deep sleep time :-) so I'm looking for Charge 5 test

[@hoffmancapote]

Great Video. I have met a few Austrian girls when I lived in Copenhagen. They are good fun

[@dalejayne2461]

nice review. have you tested any garmin devices?? What do you think is the best sleep tracker?? I just purchased the latest polar device Grit X and it seems to give you a lot of detail. However, I don't have anyway of verifying the accuracy. thanks

[@TheQuantifiedScientist]

Hi Dale, so I have only looked at a few devices so far. However, based on that (limited) experience: if you're looking for a (relatively) cheap sleep tracker that is also a fitness tracker, a FitBit appears to do quite well. If you really want to study sleep in detail specifically, the Dreem 2 appears to do quite well based on a scientific (non-peer-reviewed) paper I read. I have to say that the Oura ring and Mi Band 3 seemed to be sub-optimal. The Polar and Garmin devices I have not looked in to yet, so I cannot comment. Hope this helps at least a little bit

[@heliumflorida9693]

My Dr. recommended the Orua ring, after watching your videos I don't think it is that good. Your videos are excellent. After watching a few I don't know what to buy. What is your best suggestion. I have severe sleep issues. Thank you. Tom

[@robsteinert7375]

I would like to see how the Huawei GT2 with trusleep enabled would compare.

[@TheQuantifiedScientist]

Hi Rob! I plan to do some tests with other devices like devices with trusleep in the future, so stay tuned :-)

[@glennortizquiroz431]

Such a good video. Keep it up!

[@TheQuantifiedScientist]

Thanks so much for the compliment Glenn! I really appreciate it :-) . Have a great day!

[@danbcam]

Great video, thanks! But the Fitbit also gives total sleep time stats. If you ignore sleep stages (as I tend to do, knowing they aren't likely to be so accurate), and just lump (light/deep/REM) together vs awake, how accurate is the Fitbit Charge X against your EEG device as a percentage? And can you please comment on how you quantified sleep with he EEG device? Was this an automatic algorithm? And is there any data on how accurate this automatic algorithm is compared to manually scoring sleep stages? I'm a neuroscientist who partly works in a sleep lab, so any nerdy details I'll appreciate! Also, we were thinking of using fitbits in our lab for an upcoming sleep deprivation cognition project a PhD student of mine was thinking of running. Any chance you could share your data with us?

[@mattduncan5500]

wish you had some other fit straps on at same time, so we know how it compares to say mi band 5, samsung fit etc

[@TheQuantifiedScientist]

Hi! I did wear the Mi Band 3 at the time for a while, though the data was quite tough to access from what I remember. I plan to do more test in the future :-) So, stay tuned! Have a great day!

[@SoJuDaMaN]

So in short, this is the best sleep tracker out there at the moment? I watched your Oura ring video and it got outperformed by this device according to your data.

[@TheQuantifiedScientist]

Hi! From the Fitness trackers I have tested it is the best. However, something dedicated like the Dreem 2 headband is probably better. Check out the video: kzbin.info/www/bejne/hXrSnJSPrpqXjs0 . Have a great day!

[@teresareviewsitall3613]

Thank you for the videos 😘

[@Israel10]

Please test Oura ring and whoop

[@bobbobson4030]

Did you use normal or sensitive sleep setting??

[@SantQiu]

Is the Fitbit Charge the most accurate wearable to track sleep that you've come across? Any others with high accuracy? Thanks for the nice work.

[@TheQuantifiedScientist]

Hi Sant! So, when it come to fitness trackers, it is (for the ones I've tested) the best so far. Something de like the Dreem 2 headband is likely to do better though: kzbin.info/www/bejne/hXrSnJSPrpqXjs0 . However, this is of course a different type of device. Have a great day (hope this answer helped :-) )!

[@brunoanzanellostifelman8443]

Very good info! What about mi band? Have you tested some of them as well?

[@TheQuantifiedScientist]

I looked at an older Mi Band. I did a video on the step counter: kzbin.info/www/bejne/Y4WVqamNppqYadE . I have to check if I still have sleep data on it. Stay tuned! Have a great day!

[@Emsha]

i bought the fitbit charge 4 mainly for tracking my sleep ;-;

[@TheQuantifiedScientist]

Hi Emma, hope it is giving you interesting data!

[@Emsha]

@@TheQuantifiedScientist only time will tell i get mines this week itll be my first fitbit

[@alimoh2526]

Great video I like this kind of sleep tracker and I had some of fitbit before ,but not satisfied at all .what is the minimal sleep tracker you recommend without buy expensive one ?

[@TheQuantifiedScientist]

Hi Ali! Hmmm, anything under the price-point of the FitBit I still have to test. I think the Honour Band has the "trusleep" algorithm, but I still need to look into that! Stay tuned!!

[@tschirrenmarino]

Nice Vid Thx a lot! Can you test a Polar (Grit X or Vantage V) Watch Please? Would help a lot! Cheers

[@TheQuantifiedScientist]

Hi Marino! Thanks for the suggestion! I am planning to test a range of devices, hopefully I can add a polar watch too. The main thing is finding a way to finance all these different devices :-) . Have a great day!

[@mrthelastbloodbender]

Please do the Mi band vs EEG. I'm very curious about its sleep tracking capability, since your test result about step counting shows that the Mi band is way more accurate than the Fitbit.

[@TheQuantifiedScientist]

Thanks for the suggestion! I might have some data lying around on the Mi Band 3, and hopefully I can at some point test a newer model! Have a great day :-D

[@SpecialBrewCan]

Fascinating video thank you! My Fitbit Charge 2 actually only records detailed sleep about once a week, if I'm lucky. The rest of the time I'm only getting basic sleep results. Just wondered what your experience was with the provision of detailed sleep for all your Fitbits, and if you found the Charge 3 to be more (or less) reliable than the Charge 2 in that respect? Thank you.

[@TheQuantifiedScientist]

Hi Darrell, I used to have similar problems, though not as severe. About a year and a half ago (for a while) my FitBit would indeed record a lot of nights with just a basic sleep report. These were nights where I did sleep for more than 4 hours (which I think is the minimum that FitBit requires). At that time I found that if I restarted my iPhone and opened the FitBit app as the first app to start it would often work again the next day. Though this is very anecdotal of course, and there was no way to properly test it. I have tons of trackers and apps that require bluetooth, gps and all other sensors, but I have no idea of this contributed. Recently I have not experienced this problem on a consistent basis, and I have not really seen a difference between the charge 2 and 3 when it comes to reliability. Not sure hat it could be in your case... You could even try installing the app on a different device (phone/tablet) if you have one, and see if it makes a difference. Otherwise contact fitbit support to make sure your unit is functioning properly. Of course also make sure that the FitBit is as tight on your wrist as they recommend. Sorry I could not be of more help. let us know if you got it to work in the end! Have a great day :-D!

[@MaryAnnSweetAngel]

Omg you're a swiftie too 💜

[@PentagonalAntiprism]

Any chance to see a test with a Garmin device (with the modern HR sensor) ? They are priced more premium and I was wondering if that is also reflected in the biometrics data, in this case sleep, breathing, body battery . Great videos btw!

[@TheQuantifiedScientist]

Hi PentagonalAntiprism, thanks for your comment! I would really love to do it, and multiple people have asked, but for now that is outside my budget. Also, in the current situation I do not have access to the EEG, so it would need to wait a bit anyway. But for sure, I would love to do that at some point! Thanks for the compliment too, and have a great day!

[@PentagonalAntiprism]

@@TheQuantifiedScientist Indeed, they are quite obscenely priced... it does explain why fitbit is much more popular :)

[@parlin5387]

When the fit bit shows as being in light sleep, how often were you awake? Im just curious how often someone is awake when the charge 4 is showing as being asleep

[@tardwrangler]

Yeah, my Fitbit's strap has broken twice, they should make that bit out of metal

[@ArtukChannel]

You're the best!

[@TheQuantifiedScientist]

Thanks so much!! Have a great day!