90-year-olds are called very old people, 100-year-olds are called centenarians. In ancient times, the division of labor was more detailed. Under 70 years old, the names of old people range from 60 to 108.

You should pay attention to your health when you are old. Old people should not dance too early, but you can be greedy. Before 7 o'clock in the morning, even the sun didn't rise, it was dark, the air quality was poor, and the polluted air was still there. I don't advocate exercising so early. You can wait until it clears up and the air is a little better before you start doing morning exercises. Dancing at night is also good, and the air quality is much better than before the sun comes out.

Dancing 1 ~ 2 hours is not good. Be careful that too long exercise will increase the burden on the heart, especially for patients with cardiovascular and cerebrovascular diseases. It is suggested that elderly friends choose to dance within half an hour, or take a break every ten minutes and drink some water to eliminate fatigue.