Health .... maintaining good health.

Eat properly, eat less and with proper portions.

I'm friends with lots of elderly people. There is nothing worse that abusing your body at a younger age and survive until your 60s and 70s as a completely unwell and unhappy person. Nothing worse than living the last 10-20 years of your life in pain and disability because you didn't take care of yourself in your 30s, 40s.