Since I've started self improvement, dressing better, lifting, grooming a lot of my peers feel the need to criticize me when I don't ask for it.

I heard comments like " shave your beard you look like a hobo", "you should do more cardio because lifting isn't building your stamina", "why are you dressing nicely just to go to class". "your room is too clean to be a guy"

all these are from male friends (females love the changes). I ask them why are they so concern about my appearance they just say because we are friends or some dumb shit like that.

How do I deal with these annoying unwanted criticism ?