How Much Does Heat Slow You Down?

[@SparkBerry]

I find that humidity plays an even bigger role than heat alone. Training in Cape Town in summer in the dry heat vs the humidity in Dubai is markedly different, even at night.

[@ochaikovskyi]

From my experience - recently I've run half marathon in 2:16 at +30°C heat, two weeks after I've finished another one in 1:47 at +11°C. So, pretty much I would say 😅

[@donavinnezar]

short answer , ALOT had a race where we started at 7 am at 19c and by 9am we were hitting 34c and some points in the race it spiked up to 40 c the race was held in the cradle nature reserve (gauteng , south africa)

[@andrewmcalister3462]

Thank you James for suffering for content.

[@brendanq27]

Great video! Thank you from a warm South Africa.

[@panzerveps]

As a Norwegian I can guarantee you that my performance drops off above 28C....

[@purelyrecovery]

Interestingly my performance increases with heat and decreases with cold despite growing up in the chilly and wet UK.

[@isaacplaysbass8568]

Warm pools absolutely kill me. My pace has to really drop to stay the distance if that's what I'm training for.

[@nizam_mr]

so for folks who live in equator thats always hot, do we get performance boost when we race in colder climate (not winter level)? or theres a need to do some kind of acclimatization too?

[@Disrupterds]

Technically it should speed you up not slow you down. Warmer more humid air is less dense than cooler dryer air. Not only that but your body spends more energy trying to warm you up in cool conditions than trying to cool you down and warm conditions. Being overheated actually saves you energy. But then I was born and raised in Florida so heat is nothing for me. It has absolutely no effect on my performance. Heat is all I've ever known.