A seemingly ordinary and basic exercise actually has a lot of science in it. If you don't pay attention to exercise at ordinary times, it is easy to cause sports injuries, and even if you are exhausted, there is no fitness effect.

Bow your head when running: Some people are willing to bow their heads when running. This posture is not correct. Keep your head and shoulders stable while running, and try to keep your head forward. Don't bow your head unless the road is rough. Keep your eyes on the front, don't nest your chest, open your chest.

Arm swing: some people swing their arms a lot when running, which seems to exercise their arms, but the posture of swinging their arms a lot is not correct. The correct way is to move left and right not to exceed the midline of the body, relax your arms and elbow about 90 degrees.

Keep your upper body straight: Some people keep their upper body straight when running on the treadmill. This is actually wrong. When running, keep your waist upright naturally, but not too straight, and keep your body leaning forward. Leaning forward can reduce the burden of knee joint, reduce sports injury and maintain high motivation.

Stride: Some people run with big strides, and their calves stretch far away. This is also wrong. Because, if the pace is too big, you will follow the ground with your feet, which will damage your bones and joints. The correct way is to land with your feet, which can play a buffering role and will not damage the bones.