If you run at full speed, your heartbeat can reach about 140- 160. 50-meter running is an intense sport. After running, the heart rate and breathing times will be greatly improved, which is related to exercise.

It is recommended to pay attention to rest and strengthen exercise at ordinary times. Generally speaking, after exercise, the heart rate can be between 12 ~ 140, and the number of breaths can be about 24 ~ 30 times. Generally, it can return to normal within 30 minutes.

Precautions for running:

Running posture is the foundation of all running skills. The correct running posture is that the upper body is upright, the lower body is relaxed, the body leans forward, the head is straight, as straight as the back, and the head, chest and navel keep a line.

Relax your arms and swing back. The weight of your body leans forward and presses on your abdomen. Twist your back, especially your waist, in your swing, lift your gluteal flexors, and then lift your thighs, calves and feet forward.

Every time I move forward, I lift my legs by leaning forward, not kicking the ground. The thighs and calves are soft and relaxed, and the body tends to fall forward from the ankles, thus pushing the body forward and landing on the midsole.

Accurately speaking, the outside of the middle palm lands first, and then it is lifted by the waist, buttocks and thighs. The landing point should not be in front of the center of gravity of the body. This is to minimize the action of kicking the ground, thus reducing the pressure on the knee. Both feet must be parallel forward, so that both excessive pronation and insufficient pronation can be effectively reduced, thus reducing the pain in the inside and outside of the front end of the knee.

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