The next question everyone asks is, “What kind of exercise is best?” To which I respond, “What kind will you actually do?” The body and brain don’t seem to discriminate, so whatever you are willing to do is the perfect place to start. Gardening, walking, dancing, yoga, team sports, swimming, playing with your kids or pets—even enthusiastic housecleaning and window-shopping qualify as exercise. If you are absolutely convinced that exercise is not for you, I encourage you to expand your definition to include anything you reasonably enjoy about which you can answer no to the following two questions: 1. Are you sitting, standing still, or lying down? 2. Are you eating junk food while you do it? When you have found an activity that meets this definition, congratulations! You have found your willpower workout. Anything above and beyond the typical sedentary lifestyle will improve your willpower reserve.
from “The Willpower Instinct: How Self-Control Works, Why It Matters, and What You Can Do to Get More of It”
by Kelly McGonigal