People who don't exercise obviously have no idea how wonderful it is and how significant its impact is on how you feel and how you deal with life.
I think it is insane not to exercise...particularly when you get older.
I’ve had a few supervisors that were running fanatics. One that ran at lunch and was completely worthless on the job after lunch. One that ran so much his toes were black and his nail kept falling off. He never walked natural, always dragging his feet across the ground. Just because you feel great because you are drugged up on natural painkillers does not mean you are doing great.