When I was in my twenties & thirties we could work out, or I would 3 on 1 off. That clearly isn't working out for me anymore. But when I do train i train as hard as i can, as I always have. But I have noticed that the soreness doesn't seem to go away after a few days. Am I just not giving my old body enough time to recover? But at the same time if I take 2-3 days off & wait for the soreness (lactic acid)to go away, it's like I took 6 months off.