Physical Fitness and Activity Terms

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Physical Fitness

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Having the energy and ability to do everything you want and need to do daily. You are fit if you can meet the physical demands of an active lifestyle. This includes regular chores as well as exercise.

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Physical Activity

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Using your muscles to move your body. The more physically active you are, the more fit you are likely to be.

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Strength

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The ability of a muscle or group of muscles to exert force against resistance.

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Endurance

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The ability to sustain a physical activity or exercise for an extended period of time.

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Cardiorespiratory Endurance

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The ability of the heart, lungs, and circulatory system to supply oxygen to muscles during sustained physical activity.

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Aerobic Activity

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Physical activity that uses large muscle groups, can be maintained continuously, and is rhythmic in nature.

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Flexibility

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The range of motion available at a joint or group of joints.

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Calorie

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A unit of energy. In nutrition, calories refer to the energy people get from the food and drink they consume, and the energy they use in physical activity.

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Sedentary

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A type of lifestyle with little or no physical activity.

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Intensity

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The amount of effort or work that must be invested in a specific exercise workout.