People feel so guilty about not exercising. Especially people over 50, who feel like they've gone a lifetime without taking care of themselves. Instead of aiming for perfection, you should try to celebrate the progress you're making.
Jack LaLanneMuscle cells strengthen in response to intense exercise - whether you're 18 or 88. But the intensity is what's lacking in most people's workouts. And there are doctors who'll give you the advice, "Well, don't push it."
Jack LaLanne