Which of the following best explains why multiple exercises are needed to improve muscular strength and endurance throughout the body?
a. push-ups don't exercise leg muscle groups.
b. different exercises are needed to improve different muscle groups.
c. weight lifting is more important for muscle strength than endurance.
d. not all muscle groups can be exercised simultaneously.

The toughness and tolerance of the muscles are improved when the body is indulged into multiple exercises as there are different groups of muscles in the body and every group requires different exercises.

Further Explanation:

Endurance, balance, strength, and flexibility are the components in the body that needs be maintained and therefore, physical activities and exercises are composed keeping these four categories in mind. As every category involves different sets of muscles, different exercises are required to maintain that particular category. Performing all types of exercises keeps the body healthy and reduces the risk of injury to any body part or muscle.

The exercises and activities falling under these categories are mentioned below:

1.Endurance

An increase in heart rate and breathing is achieved through aerobic or endurance activities. Such activities help in keeping the lungs, circulatory system, and the heart in a healthy state which in turn improves the overall fitness of the body. Raising the enduranceof the body helps carry our day to day activities easily. The exercises involved o improve endurance are jogging and brisk walking, and dancing.

2.Balance

A common hurdle for elderly people is to maintain balance and prevent falling down. Certain exercises that involve lower body strength are used to improve the balance. These include heel-to-toe walk and standing on one foot.

3.Strength

The muscles are made stronger by indulging in strength exercises. The improved and stronger muscles help climb stairs and in lifting heavy materials. Such exercises are also called resistance training. Lifting heavy weights and use of resistance bands are some strength improvement exercises.

4.Flexibility

Flexibility provides the movement with freedom. The exercises to attain flexibility helps muscles to stretch and keeps the body agile. The exercises include yoga, calf stretch, upper arm and shoulder stretch.

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Answer Details:

Grade:Senior School

Subject:Health

Chapter:Exercise and Workout

Keywords:

Muscle strength, endurance, tolerance, flexibility, balance, physical activities, exercise, yoga, stretch, jogging, walking, heart, lungs, respiratory system.

the last statement is correct i.e.

when your heart is not pumping enough blood around your body because your heart is severely failing, you may need an artificial heart. an artificial heart is a mechanical device, about the size of an orange, that is connected to your heart or implanted in your chest to or replace a failing heart.

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