Why We Need Exercises?

Increase In Heart Rate

Generally the resting heart rate of an adult remains at 72 beats per minute. The elite endurance athletes usually have 28 to 40 beats per minute. Even before the beginning of exercise the heart rate increase in anticipation. It is known as anticipatory response. When an individual starts exercise his heart rate increase as per the intensity and duration of the exercise.

Decrease In Blood Pressure

Regular exercise decreases the blood pressure (systolic and diastolic blood pressure) by up to 10mm Hg at rest.

Increase In Blood Volume

The regular exercises increase the blood volume. In fact, there is increase in plasma volume which enhances the blood volume. In addition, the body produces a greater number of red blood cells in order to keep the muscles supplied with oxygen during heavy exercise.

Quicker Recovery Rate

Regular exercise quickens the recovery rate. A trained athlete’s heart rate becomes normal earlier in comparison to beginner. Rate of respiration also become normal quickly. Therefore, the recovery becomes fast.

educed Risk Of Heart Diseases

Regular exercise gradually reduces stress-related hormones from circulation in the blood. This increases the blood vessel path, which in turn lowers the risk for the buildup of plaque that can lead to coronary heart diseases. Hence, exercises reduce the risk of heart diseases.

Effect Of Exercises On Respiratory System

Regular exercises have following effects on respiratory system:

Strong Willpower

Regular exercises increase will power of the individual. As Pranayama, the specific exercise for lungs increases the will power of the doer.

Increases in Tidal Air Capacity

Tidal air is the amount of air that flows in and out of the lungs in each quiet respiratory movement but tidal air capacity is the amount of air that can be breathed in and breathed out, over and above the tidal air by the deepest possible inspiration/expiration respective. It estimated at about 500 to 800 cc. After doing regular exercises, it has been noted that this tidal air capacity can be increased.

Decrease in Rate of Respiration

It is certain that when a beginner starts exercise, his rate of respiration increases. But when the same individual performs exercises daily, his rate of respiration decreases in comparison to the beginning stage at rest.

Increase in Size of Lungs and Chest

When a person performs exercise regularly, he requires more amount of O2. He inhales more amount of air during exercise. Consequently, his lungs and chest are exercised. After some period, the size of his lungs and chest increases.

Increases in Residual Air Volume

Residual air is that amount of air, which is left in the lungs after exhalation. If an individual performs regular exercise, his residual air capacity increases in comparison to an individual who does not perform regular exercise.
Effects of Exercises on Muscular System

Regular exercises have following effects on muscular system:

Changes in Shape And Size Of Muscle

Through regular exercise, the shape and size of muscle is changed. In fact, cells of muscles are enlarged which change the shape and size of muscle.

Controls Extra Fat

Regular exercise controls the extra fat of body. Exercises burn the calories which are taken in the form of fat.

Formation of More Capillaries

When exercises are done, the colour of muscles is changed, because number of new capillaries is formed for a better efficiency of blood circulation.

Body Posture Remains Correct

By doing exercise regularly, the strength of muscles increases, which in turn, keeps the body posture in correct position. The postural deformities do not occur. If there is any physical deformity, it is removed by doing regular exercise.