Biology Now with Physiology (Second Edition)
Biology Now with Physiology (Second Edition)
2nd Edition
ISBN: 9780393631791
Author: Anne Houtman, Megan Scudellari, Cindy Malone
Publisher: W. W. Norton & Company
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Chapter 5, Problem 10TQ
Summary Introduction

Exercise is physical work in which body muscles are stretched and relaxed. Physical exercise makes the heart beat fast and increases the blood circulation to all parts of the body. Physical exercise makes the body fit and trim.

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