1, reasonable fitness, proper diet and good work and rest,

Can make people youthful, can make people many years younger, have a delicate and shiny face, and have a healthy and ruddy complexion.

2, overtraining, reasonable diet, good work and rest.

It can make people overdraw their health quickly and make them sleepy and exhausted.

3, overtraining, hotel meals, often playing in the dark.

It can make people quickly aging, getting fat, and even blackening and burning.