Like health in general. You can be a heavy smoker, drinker, and never exercise yet live a healthy life until you're a 100 years old. Or you can eat healthy fo

Like health in general. You can be a heavy smoker, drinker, and never exercise yet live a healthy life until you're a 100 years old. Or you can eat healthy food, exercise, and do all the right things, yet be plagued with poor health your whole life.