Iron does not become steel without exercise, and people are unhealthy without exercise. What do you mean?

Iron does not become steel without exercise, and people are unhealthy without exercise.

Life lies in exercise.

Walk 100 step after dinner and live to 99.

Practice for three or nine days in winter and three days in summer.

A healthy body is the premise of doing everything.

It's better to invite people to sweat than to invite people to eat and have money.

Exercise more in winter, get sick less, be lazy in winter, and drink more medicine.

Exercise is the best way to keep healthy.

Constant water does not rot, and people who practice often are healthy.

Life is endless, and exercise is endless.