3) Sleep
Finally, after eating right and exercising, you need to sleep. The average adult needs about eight hours of sleep per night. Sleep is the great cure-all. It is a time when your body recovers, and when your immune system is improved. A survey conducted by the American Cancer Society concluded that people who sleep less than 6 or more than 9 hours per night had a death rate 30 percent higher than those who regularly slept 7 to 8 hours. Even those who slept 6 hours or less who otherwise had no health problems had death rates 1.8 times higher than those who slept “normal” hours. So don’t cheat your sleep!