Great question! You can keep your body strong by eating nutritious foods, exercising regularly, and getting enough sleep. Strength training is another way to become stronger, lessen the chance of injury or improve strength after an injury. Similar to other physical activities, “strength training” combines the use of free-weights and weight machines to strengthen different groups of muscles, which may also improve muscle tone, strength, as well as heart and bone health. The American Academy of Pediatrics recommends that you talk to your primary care provider before you begin a strength training program to make sure you are in good health.