Hey there
the answer is
C.
During exercise the brain releases endorphins, the chemicals that help improve our mood.
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SAVAGELEGEND72
If someone has been exercising for at least three months consistently , this person is considered a regular exercise.
Explanation:
Regular exercise is needed to keep our body fit , so that proper circulation takes place . It will also improve the overall fitness. Some of the examples of regular fitness are walking, swimming, jogging. This also increase the regular strength of the body. The cardiovascular system also works efficiently. Regular exercise also helps in gaining energy that also helps in doing daily chores. It also provide healthier skin also improves the mood.
Efficiency is defined as the
measure of the amount of work or energy is conserved in a certain process. At
all times, in every process, work or energy is always lost or wasted due
to certain interference. Not all work given is converted to useful work or
energy. Thus , efficiency is calculated by dividing the energy or
work output to the energy or work input then the value is multiplied by
100 to express efficiency as percentage.
Efficiency = (energy output / energy input)
0.50 = kinetic energy produced / 150 kcals chemical energy
<span>kinetic energy produced = 75 kcals</span>