Well, there's nothing that's truly after your well-being except you and your loved ones. Not even my local gym nor Youtube workout videos nor my $1 pedometer phone app is after my well-being.

Our incentives simply align. I want to exercise more, they want to sell me something that I want to use.

Everyone is free to do push-ups and run at their own leisure without giving money to anyone else. Unfortunately most of us have trouble with that. It seems too much to call something a "con" if it can compel someone to improve their health just because it's transactional.

If someone can figure out how to make money from compelling people to exercise, I think it's a net positive. At least it's certainly better than all the money being made by compelling people to indulge in habits that are bad for them, which seems like just about everything.