Awesome! Any topics you'd like me to cover?

Yes, doing DB/KB single arm movements gets you that added benefit from the increased demand. We have mirror neurons to help one extremity move like the other. Very beneficial with stroke or post-op rehab if someone has a hard time getting a muscle/muscle group to contract. With that said, doing alternating DB/KB presses (or any other single arm/extremity movement) with limb moving and the other stationary, bumps the benefit up another level. Again, not the end all Be all. Just another tool in the toolbox :)

Hopefully this helped!!