Who needs exercise?

I met a gym instructor yesterday and after introductions, we started chatting about how we spend our day. She starts her day pretty early and sometimes, depending on her schedule, ends the day pretty late.
All doing some form of exercise (spinning, aerobics, zumba...)

Most medical professionals recommend exercise as a surefire way for good health, longevity and general well-being.

So my muse for today is this:-

- Will she still need to 'get some exercise' after her workday?

- How does she unwind? 

Personally, I admire her and her career choice, because anything more than 60 minutes of strenuous exercise has me gasping for breath!