hey im not over 40 but my dad is and i have a few questions on him behalf to help him out. Back in the day, he used to go to the gym and ive seen pics of him lifting whole racks and squating 2-300 lbs. Now these days, the only exercise he gets is yard work which is fine but ill talk to him and he sounds all depressed saying "i feel like im 100 years old". keep in mine he is suffering from back and shoulder injuries in a car crash. surely there gotta be a way to help him, to motivate him. any supps anybody over 40 recommend, workout routines, something. please respond, people experienced with this "lack of drive" from aging.