The "5" is eating at least five servings of fruit and vegetables each day.
The "10" is getting at least 10 minutes of moderately vigorous activity each day.
And the "8," of course, is getting about eight hours of sleep each night.
It's all part of the Mayo Clinic's "Eat, Move, Sleep" strategy for better health. You can find it in the clinic's new book "Healthy Heart For Life."