I think you are being overly dramatic on "enormous", but either way: it is not a zero sum game. If someone adds some activity into their weekly plan while simpl

I think you are being overly dramatic on "enormous", but either way: it is not a zero sum game. If someone adds some activity into their weekly plan while simply maintaining their current eating habits, that is still an overall win. It is certainly a win for their health, because obviously eating "healthy stuff" does not actually make you perfectly healthy.