First of all, remember to warm up before exercise. When exercising, don't push too hard together, and start doing some difficult movements and exercises, which is not good for muscles and tendons. So before you start fitness, you should do some warm-up exercises, stretch your hand, kick your legs and pull your muscles.

Secondly, if you want to stay healthy, you should start with easier exercise. People who have just started fitness should not do some difficult movements and sports at first, but can do some relatively simple sports first. For example, if you choose to do indoor sports, you can do pull-ups first, and don't lift a heavy barbell at the beginning.

Finally, we should control the intensity and duration of fitness. Fitness can't be done overnight, it needs long-term persistence, so don't use strong intensity every time you exercise. You should learn to exercise step by step, starting with simplicity and gradually increasing the difficulty and intensity, so as not to harm your health.