title: How far should you go to stay fit? The battle between tough and tame.
authors.forename: L
authors.initials: L
authors.lastname: Rosellini
mesh_terms: D002487:Centers for Disease Control and Prevention, U.S.; D015444:Exercise; D017408:Guidelines as Topic; D006293:Health Promotion / Q000592:standards*; D006801:Humans; D010809:Physical Fitness; D011634:Public Health; D014481:United States