People can lose up to 80 percent of their strength by age 65, according to Gundersen Health System. And while this may be quite a few years off, time has a way of creeping up on you.
Fitness Training Archive
Burn More Calories with High Intensity Classes, Join In Chicago
High intensity interval training, HIIT, is a method of training. The workout alternates between bursts of physical activity followed by a period of little or no activity. A good example of HIIT is running. Run at your