The key to exercise is to do what you can according to your own situation.
For young people who are very healthy, high-intensity physical exercise can be used to enhance their physical function and improve their physical fitness.
For the elderly, you can't do this kind of strenuous exercise to keep fit ... the elderly should take a relatively soothing way to keep healthy ... for example, if you are in good health, you can walk quickly. If you are in poor health, you can walk slowly ... this will not only exercise, but also do no harm to your health.
Therefore, the key to exercise is to do what you can ... it doesn't matter which way you take. It is the key to suit your own situation ... Exercise must be moderate. Insufficient exercise wastes time ... excessive exercise will damage your health, but it will affect your health.
Therefore, according to your own situation, doing what you can is the correct way to exercise. ...