If they're being coached and their coach wants to review their form, if they want to review their own form, maybe they enjoy making gym vids, etc. As long as their respectful I don't really see much issue
1
Anonymous10w
To record themselves for form, to show a trainer, or to post online. Why do you care so much? As long as they’re out of everyone’s way you shouldn’t care
1
Anonymous#210w
Except they never are, also everyone else in the background, it’s weird