1. Prevention of injury: Stretching helps to improve muscle flexibility and reduce the risk of muscle strain and sprain. In the process of fitness, muscles may become tense and stiff due to exercise. Stretching can help relax muscles and keep them in the best condition.

2. Improve the exercise effect: Stretching can improve the range of joint activity and make the exercise smoother. In addition, stretching can also help improve blood circulation and provide more oxygen and nutrition for muscles, thus improving the exercise effect.

3. Reduce muscle soreness: After fitness, muscles may be sore. Stretching can help relieve muscle pain and speed up the recovery process.

4. Increase flexibility: Stretching can improve the flexibility of the body and make joint activities more comfortable. This is very important for some sports (such as yoga and dancing). ) requires a high degree of flexibility.

5. Improve body posture: Long-term adherence to stretching can improve body posture and prevent pain and problems caused by bad posture.

In a word, stretching before and after fitness helps to protect the body, improve the exercise effect, relieve muscle soreness, increase flexibility and improve body posture. Therefore, when doing fitness exercises, don't ignore the importance of stretching.