There are several types of exercise, each serving different purposes. Aerobic exercise, such as running or cycling, focuses on improving cardiovascular endurance. Strength training, which includes weightlifting and resistance exercises, aims to build muscle and increase overall strength. Another category is flexibility exercises, like yoga or stretching, which enhance the range of motion in joints and muscles. Lastly, balance exercises, such as tai chi, help improve stability and coordination. Incorporating a variety of these exercise types can lead to a well-rounded fitness routine.