It is important to warm up before exercise.

1. Why is it important to warm up?

In order to ensure safety, it is generally necessary to do a warm-up exercise before fitness exercise. The main purpose of warm-up exercise is to speed up the heartbeat slightly. It has two advantages:

(1) can raise the body temperature of main parts of the body.

② It can make more blood (oxygen) flow to muscles, thus preparing the body for more vigorous activities.

Stretching exercise after slight activity makes tendons more flexible, because it raises body temperature and increases the range of motion of joints, thus avoiding the damage of joints, ligaments and muscles.

2. Which muscles need to be warmed up?

Warm-up exercises should focus on large muscle groups. Practitioners can warm up their legs by standing still, turning around and lifting their knees. If it is chest and shoulders, you can turn around, raise your arms and turn around. People who like treadmills or skipping rope can do brisk walking for 3-5 minutes and some stretching exercises first.

3. How long does it take to warm up?

It takes about 3 minutes for the body to realize how much blood it needs to deliver to the muscles. Warm-up exercise should last about 5- 10 minutes, and should be accompanied by stretching activities of major muscle groups.

4. Why do you want to relax?

In fitness class, it is very important to recover slowly after you reach and maintain a certain exercise heart rate. Relaxation has two main purposes:

① It can slow down the high-speed beat frequency of the pulse.

(2) It can make a large amount of blood return to the heart and prevent it from staying in the legs. If you stop exercising suddenly, it will usually lead to dizziness, nausea and fatigue, which are common symptoms when you relax abnormally.

5. Relaxation duration

It takes about 3 minutes for the body to realize that it no longer needs to supply more blood to the muscles. Relax safely for at least 3 minutes, 4? Five minutes is certainly better. All relaxation activities should include muscles and nerves, so as to avoid muscle soreness and tension.

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