It is something which bothered me why it was never taught in yeshivas, by rabbeim. Some yeshivas maybe DO point it out, but in the yeshivas where I learned, rabbeim would perhaps talk about the isurrim of over-indulgence in physical pleasures and the mitzvas asei of watching one’s health, but not in context of the mitzvos itself. It wasn’t a shmooze by itself. It wasn’t a shmooze on health, weight issues, unhealthy lifestyles, mindsets, excercise, and how gross it is to be fat. Truth is (almost) all of my rabbeim were fat! So there you go…
sigh….thank G-D for my mom….