Everyone knows that exercise is good for you, the same way we know we should eat our greens and get a little Vitamin D. We’ve heard that exercise releases endorphins that can make you feel better mentally as well as physically.

I have worked out regularly since I was a teen. And yet, I still didn’t 100 percent believe.

Since becoming a full-time caregiver, I have been fed a steady diet of platitudes, aphorisms and…