2. Drink enough water
You know the drill: Drink 8 glasses of water a day. While there may be some debate about that number, the National Academies of Sciences, Engineering, and Medicine determined that an adequate daily fluid intake is:• About 15.5 cups (3.7 liters) of fluids for men
• About 11.5 cups (2.7 liters) of fluids a day for women
Seidenberg notes that dehydration can cause fatigue, foggy thinking, headaches and constipation, all signs of aging, adding that “a hydrated brain is a healthier brain, and as we get older it becomes more difficult to absorb nutrients in the gut, and a hydrated gut is a healthier gut, too.”
