The knee is the largest and most complex joint in the body, and it supports the weight of the entire body by just a narrow contact surface. The weight of the knee is almost zero when lying down, 1 to 2 times the weight when standing up and walking on flat ground, 3 to 4 times when walking up and down slopes or stairs, 4 times when running, and 8 times when squatting and kneeling. As a result, our knee joints are often overwhelmed and suffer from various problems or pain. Data shows that about 120 million people in China suffer from osteoarthritis, almost one in every 10 people. At present, half of the people over 50 years old in China have this problem, the prevalence rate reaches 60% after the age of 60, and by the age of 70, almost every elderly person will suffer from this disease! How to slow down the aging process of the knee? 1, pay attention to changing posture posture long-term sitting or squatting work, every once in a while should stand up and walk around, stretch the lower limbs, or do knee massage with your hands, so that the knee joint is not fixed in the same position for a long time, which helps to promote blood circulation in the joint. 2, strengthen the lower limb activities exercise usually can often do alternate squatting, standing up and other activities, so that the knee joint to get full extension, rotation, to prevent its stiffness and straightening. 3, appropriate to reduce the amount of exercise usually participate in more strenuous exercise, into the middle and old age should gradually reduce the amount of exercise, so that the joints get rest, should not participate in the fast, high intensity exercise program. 4, pay attention to the prevention of cold and moisture and warmth joint surface is composed of cartilage tissue, cartilage tissue vascular scarce, poor blood circulation, if a long time by the cold stimulation, may be due to local vascular spasm contraction, so that the blood supply is reduced. 5, weight control Reducing weight, reducing joint damage and weight bearing plays a very important role in the treatment of osteoarthritis of the knee, but this is often easily ignored. 6, adhere to every night foot soak Before going to bed can be hot water soak feet for 10 to 15 minutes (the water should not be over the ankle), dry the feet and then rub the palm of each foot in the two feet 60 times. Doing so has the effect of raising Yang, warming the lower yuan, nourishing the lungs and kidneys, and driving away the dampness.