9781422275894

• Muscular endurance is the ability of muscles to bear repeated contractions. Push-ups help to increase muscular endurance. • Body composition refers to the amount of fat and muscle mass in the body. Since muscles weigh more than fat, it is important to measure body composition rather than body weight to check the fitness of a person. One of the easiest ways to measure body composition is through the Body Mass Index (BMI). • Flexibility is the ability to move and use muscles freely. It’s a good idea to practice stretching before and after each workout. Stretching is one of the easiest ways to assess the flexibility of each part of the body.

KEYS TO FITNESS Drink plenty of water and exercise regularly to keep your body healthy and fit. Climbing stairs instead of using elevators or escala- tors and brisk walking are easy ways to maintain fitness.

DID YOU KNOW?

• The strongest muscle in the body is the masseter, located in the jaw. • The heart is a vital muscle, and an average adult’s heart beats more than one hundred thousand times a day.

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