A muscle is a terrible thing to waste.

You hear a lot about aerobic activity for your heart, but what about your muscles? You use them for everything you do – from getting out of bed to brushing your teeth and driving. Keeping your muscles strong not only helps you stay active, but also protects you from injury, disability and the effects of aging. Yet the Centers for Disease Control and Prevention says only about 30% of adults in the U.S. do enough muscle training.

One way to change that is calisthenics, a form of exercise that focuses on your major muscle groups. It includes activities like push-ups, sit-ups, squats and lunges. You can start slowly as a beginner and build up your workout as you build your muscles. For best results, do these activities at least two days a week.

Hidden Trivia – all those that email me the correct answer to the following question by 12 PM today will be put into a drawing for a prize. The Center for Disease Control and Prevention says that only what percentage of the adults in the US do enough muscle training?