They learn to balance on one foot; walk on their tiptoes; and climb, hop and skip. Three-year-olds can pedal, use a handlebar and operate three-wheeled vehicles, such as tricycles, but they do not have the balance required to operate a bicycle with only two wheels.
Yoga and Pilates are also very common exercise classes, and there are dozens of different variations of these as well. Chances are, if one is looking for a specific type of exercise class, there is a gym somewhere that offers it.
The four main types of physical activity are aerobic, muscle-strengthening, bone-strengthening, and stretching. Aerobic activity is the type that benefits your heart and lungs the most. Aerobic activity moves your large muscles, such as those in your arms and legs.