Reynolds, Gretchen. The first 20 minutes : The surprising science of how we can exercise better, train smarter and live longer / First twenty minutes Gretchen Reynolds. - London : Icon ; Hudson Street Press, c2012. - xvii, 284 p. ; 24 cm. Includes index. ISBN: 9781848315020 Subjects--Topical Terms: Physical fitness.Physical education and training--Physiological aspects.Exercise--Physiological aspects.Physical Fitness--Popular Works.Exercise--Popular Works.Exercise--physiology--Popular Works. LC Class. No.: GV481 / .R49 2012 Dewey Class. No.: 613.7 / RGF