Hygiene, I can deal with anything other than sweaty smell that comes from working out or playing a sport in a dude. However, I'm not too keen on any body odor in a woman
Huge beer gut/belly, I tried to give 2 guys in the past a try but realized I'm not attracted to that at all. I can forgive some flab on the stomach area as long as it relatively flat appearance.
Having no developed upper body muscles or a flat chest, I can deal with a mesomorphic, endomorphic, or a combination of mesomorphic/ectomorphic body types but it is a big no go on straight up ectomorphic body types. I have a solid built frame with a developed upper body, so like dudes with somewhat developed pectorals.