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.
In an ideal world, people would be physically active and fit. However, people often confuse the difference between physical activity and exercise. Physical activity includes body movement that utilizes muscles and requires more energy than rest. Examples include gardening, raking the leaves, vacuuming and grocery shopping. Exercise is a form of physical activity that is planned, structured and maintains your heart rate at a certain level for a specific length of time. This includes group fitness classes, jogging, lifting weights or swimming.