Aerobics is a form of cardio workout that combines rhythmic movements with stretching and strength training routines. Your class will start with a warm-up, followed by choreographed routines on the step, and a cool down at the end. In some classes, you'll use hand weights for strength-training moves off the step. Aerobic exercise can help boost your heart rate and breathing, strengthen your muscles, lower your cholesterol, reduce your risk of type 2 diabetes, improve your immune function, and lower your blood pressure. It also helps to burn up calorie which results in weight loss. In addition to looking better and being healthier, it increases your stamina, giving you more energy for both work and play.