Aerobic fitness equipment includes: treadmills, exercise bikes, treadmills, elliptical machines, stair treadmills, spinning bikes, rowing machines, handstands, fitness equipment, badminton equipment, table tennis equipment and other equipment to assist aerobic exercise. Advantages: it integrates walking, climbing stairs, cycling and skiing. Can exercise the coordination of upper and lower limbs. There is little pressure on the joints when practicing, and it is a sports instrument suitable for all ages. There is less noise. Limitation: The angle and way of lower limb movement are limited. Conclusion: There are lower limb restrictions.