We've all heard "you need to exercise" more times than we can count…but according to Todd, exercise is the single most important thing you can do to become happier right now. Exercise is a natural anti-depressant that will enable you to feel more powerful and less stressed. And what's more, exercising just twenty minutes every other day will open your mind and body up so that they can best receive all of the changes you'll make in the next ten weeks.