My housemate gets up 2-3x at night to use the bathroom.getting up and walking a few steps makes him out of breath. But of course he is healthy and you are fatphobic for suggesting he isn't.   I have fat friends who are my friends because they are generally good people, awesome aunties to my kids, and they are real about it, make no excuses, they are fat and unhealthy and would like to change but they just eat too much junk and they will be the first to tell you that.