I'm neither - I'm almost 50, 5'9" and 175 lbs (down from 190 in last 4 months). I wouldn't call myself athletic, per se, but most non-athletic people refer to me as "athletic" build. Other than inherited high cholesterol, I have no underlying medical issues. Any physical ailments are musculoskeletal and are resultant of trauma and injuries. I eat a good diet, with minimal junk, lots of fruits, veggies, and grains, and small amounts of meats. And honestly, no one ever pegs me for being older than 35. Oh, and I'm a French model. J/K.
Seriously though, the other thing is that I never get "that stoned". I have never really been able to smoke enough weed (not that I try often) to get baked. I get stoned to a point, and then anything beyond that doesn't do much.