How to Extend our Life?

On average, humans sleep a third of their lives, and we all know that sleep is needed for mental and physical health. The amount of sleep for each person is 7 hours, except for children and elderly. Sleep benefits for human health are more than diet and exercise. The death rate for people who sleep 6 hours or less is 12% higher than others. An interesting point is that the risk of death for those who sleep 9 hours or more is 30% more than others.