Exercise at 20 vs. 60: Martina Navratilova, others talk fitness

... says Navratilova, 56, who writes a health and fitness column for AARP . "And mix up your routine. Do strength, cardio, yoga. Do what feels good in the body, go easy on the joints," she says. That's actually pretty much in line with government ...

http://www.mercurynews.com/bay-area-living/ci_23542712/exercise-at-20-vs-60-martina-navratilova-others