You run, walk, and ride your bike to keep your heart and lungs in good shape. You stretch your muscles and do yoga to stay limber and flexible. But are you also doing regular strengthening exercises?
Strengthening or resistance exercises help keep your muscles that support your back, abdomen, knees, chest, shoulders, neck, and wrists strong and less likely to get injured. Strong muscles mean greater endurance and energy, a faster metabolism (which burns more calories), and better posture.