Exercise by the Numbers

36 Pages·2007·2.233 MB·English

by  Cecilia Minden,Tonya Walker,Steven Abrams

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Century
Skills Library
Do you like to exercise? Have you ever fi nished a long workout and wondered just
how many calories you burned or how far you ran? Look inside to fi nd out how
your math skills can help you keep your fi tness program on track.
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The Real World Math: Health and Wellness Guides introduce readers to some of X
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the ways that math can help them make healthy choices in the increasingly com-
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plex world of the 21st century. Other titles in the series include: C
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• Breakfast by the Numbers • Grocery Shopping by the Numbers
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• Cooking by the Numbers • Lunch by the Numbers
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• Dinner by the Numbers • Restaurants by the Numbers Y
• Gardening by the Numbers T
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To guide your reading, look for these notes that will help build the understanding
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and skills you’ll need in the 21st century. Look for the following margin notes:
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Learning & Innovation Skills M
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You need to learn about lots of things, but you also need to learn how to
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learn. These notes give you hints about how to use what you know in better R
and more creative ways. S

21st Century Content

You study reading, math, science, and social studies. You also need to
learn about the world of work and your community. These notes tell you
about business and money. They also give you ideas about how you can
help yourself, your community, and the world.

Life & Career Skills

These notes tell you about skills you will use throughout your life. They give
you ideas about how to work well with others, make good decisions, and
achieve your goals in life.
ISBN-13: 978-1-60279-010-0
ISBN-10: 1-60279-010-8
9 781602 790100

21st
Century
Skills Library
REAL WORLD MATH: HEALTH AND WELLNESS
exercise by
the numbers
Cecilia Minden
Cher r y Lake Publishing
Ann Ar bor, Michigan
Published in the United States of America by Cherry Lake Publishing
Ann Arbor, MI
www.cherrylakepublishing.com
Math Adviser: Tonya Walker, MA, Boston University
Nutrition Adviser: Steven Abrams, MD, Professor of Pediatrics, Baylor College of
Medicine, Houston, Texas
Photo Credits: Page 4, © Roy Morsch/Corbis; page 22, Illustration courtesy of U.S.
Department of Agriculture
Copyright ©2008 by Cherry Lake Publishing
All rights reserved. No part of this book may be reproduced or utilized in any
form or by any means without written permission from the publisher.
Library of Congress Cataloging-in-Publication Data
Minden, Cecilia.
Exercise by the numbers / by Cecilia Minden.
p. cm. — (Real world math)
Includes index.
ISBN-13: 978-1-60279-010-0
ISBN-10: 1-60279-010-8
1. Mathematics—Juvenile literature. 2. Exercise—Juvenile literature. 3. Health—Juvenile
literature. I. Title.
QA40.5.M48 2008
510—dc22 2007005155
Cherry Lake Publishing would like to acknowledge the work of
The Partnership for 21st Century Skills.
Please visit www.21stcenturyskills.org for more information.
Table of Contents
C h a p t e r o n e
Breaking a Sweat 4
C h a p t e r t w o
Working Out the Way You Want 10
C h a p t e r t h r e e
Do the Math: Pace Yourself 14
C h a p t e r f o u r
Do The Math: Feel The Burn! 20
C h a p t e r f i v e
Fit for Life 25
Real World Math Challenge Answers 29
Glossary 30
For More Information 31
Index 32
About the Author 32
ChapTer One
Breaking a Sweat
Playing basketball is a great way to get some exercise.
Y
ou and your friends decide to play a game of basketball after school.
You change into shorts and a T-shirt because you know you’re probably
going to work up a sweat running, jumping, and shooting the ball. Sure
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enough, you get a great workout on the court. Your heart is pounding, and
you feel is energized. Who would have guessed that exercise could be so
much fun?
Have you ever heard the expression “Your body is a machine”? Each
organ and cell does its part to make sure your heart is pumping and your
muscles are working. To keep a machine running, however, you need to
use it on a regular basis. To keep your body running, you need to exercise.
Your heart is one of the most important organs in your body. It has
countless functions, such as pumping blood to other major organs. It
is also one of the most powerful muscles in your body. Muscles require
exercise to stay healthy and strong. When you push yourself to remain
in motion for a consistent block of time, you are strengthening all your
muscles, including your heart.

real World Math: exercise by the numbers
There are several other physical and emotional
earning
I &
nnovation benefits to exercise, including burning calories.
Skills
exercise isn’t just an
The calories you consume when you eat food
organized activity in
your gym class. if you
get creative, you can create energy in your body. In turn, your body uses
work exercise into your
life in many different
that energy to work properly. A healthy intake of
ways. Sports such as
baseball or soccer
are one way to get calories and regular exercise are important parts of
some exercise. Some
people prefer yoga or
a healthy lifestyle.
aerobics. Biking and
hiking let you exercise
Too many calories and not enough exercise can
in the fresh air and
enjoy nature. even
cleaning your house lead to trouble. Your body stores unused calories
and doing yard work
can be considered
as extra fat. In other words, you gain weight. Being
exercise because
you’re staying in motion
and burning calories. overweight can cause physical problems that may
what’s your favorite
form of exercise?
harm your health. Regular exercise is important for
burning off those extra calories and keeping your
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weight at a healthy level. Another advantage to exercise is that it improves
how you feel. Physical changes occur when you experience stress. Exercise
relieves some of this stress. Taking a brisk walk or a quick swim can help
Yoga is a great way to increase your flexibility and calm your mind. Your
doctor can help you learn more about whether yoga is right for you.

real World Math: exercise by the numbers
you calm down. Whatever form of exercise you choose, staying physically
active not only relieves stress and lifts your spirits. It can also help you feel
more energetic and provide you with a sense of accomplishment.
Now you know the benefi ts of exercise. Are you ready to run that
machine of yours? Math skills and your knowledge of nutrition will help
you get your body in the best possible shape.
REAL WORLD MATH CHALLENGE
rosa is feeling tense about the upcoming school spelling bee. She has 2 hours
and 45 minutes before the bee begins. She wants to spend at least 30 minutes
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hheerr ttiimmee bbeeffoorree tthhee bbeeee ccaann sshhee ddeevvoottee ttoo eexxeerrcciissiinngg??
(Turn to page 29 for the answers)
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