The second swimming is also a good aerobic choice, which is a good choice for people who are overweight and have problems with their lumbar vertebrae and knees. Moreover, the interest and intensity of aerobic can be increased by choosing different swimming strokes, and the aerobic time is 30 to 60 minutes. Then there is functional aerobic exercise, also called high-intensity interval exercise. It is a kind of exercise to train multiple muscle groups through different movements at different speeds to achieve high consumption and high intensity aerobic exercise to reduce fat and improve heart and lungs. But the requirements for trainers are higher.
Because the intensity, angle and intensity of intensity movements are relatively large, attention should be paid to the intensity, time and action arrangement during training, and the time should be 20 to 30 minutes.