Seriously. My BMI is 20 but I don't have as much muscle as I would like and I feel fat on some days because I don't have a super toned stomach or butt. Shoulders yes, great shoulders and legs, butt, not so much.  I fortunately have a mini shitlord group who all work jobs where you move and like to go fishing and hunting etc. so they are all getting exercise and eating tasty non garbage food.