40, 50, 70... If you can move, try expanding your range of motion. If you can do the range of motion, start adding weight. I don't think there is something magi

40, 50, 70... If you can move, try expanding your range of motion. If you can do the range of motion, start adding weight. I don't think there is something magic that stops one from starting to be healthier at 40. I'm also a layman.