There are many ways to exercise the knee and the muscles around the knee in daily life, the common ones are quadriceps isometric contraction, straight leg raise, static squat, swimming, running, etc. 1, quadriceps isometric contraction: also known as quadriceps static contraction training, the method is to take a supine position, lower limbs straight, and then force contraction of the quadriceps, driving the knee and surrounding muscles, each action can be held for 20 seconds; 2, straight leg elevation: the specific method is to take the supine position, lower limbs straight, force the lower limbs up and maintain a certain height for 10-15 seconds; 3, static squat: maintain a straight posture, and two feet and two shoulder width, and gradually squat, so that the hip and knee joints to maintain 90 degrees, maintain 10-15 seconds; 4, swimming: mainly through the non-stop use of the legs to paddle, to promote muscle contraction of the lower limbs; 5, running: running The process of constantly lifting the lower limbs and stretching forward can exercise the muscle strength around the knees and knees.