title: Physical activity guidelines for Americans.
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D002648:Child; D002908:Chronic Disease; D006233:Persons with Disabilities; D015444:Exercise; D005260:Female; D017408:Guidelines as Topic; D006291:Health Policy; D006801:Humans; D008297:Male; D008875:Middle Aged; D011247:Pregnancy; D014481:United States