Hey guys, so I am starting my father on omad, and he's in need of some changes still and I have asked him to try working out more often. He hasn't worked out in years and has gained some weight, but he's a bit on the old side, around 72 years old. idk I forget after a while. Anyway, do you guys have any suggestions for safe workouts? He's got a bad leg, knee and hip and I don't want him getting injured either, but would like for him to move more often.