Question

select the correct answer.
how does regular exercise help make us more alert and energetic?

a. it gets our hearts beating faster and gives us a rush of energy.

b. exercise increases our endurance and therefore we feel less tired.

c. during exercise the brain releases endorphins, the chemicals that help improve our mood.

d. we breathe in more oxygen while exercising, which helps us feel more awake.

Explanation:

When we exercise, the brain releases endorphins. Endorphins are neurotransmitters that act as natural painkillers and mood - elevators. They can reduce stress, anxiety, and depression, and make us feel more positive and energetic.

• Option A: While the heart does beat faster during exercise, the "rush of energy" description is too simplistic compared to the role of endorphins in long - term alertness and energy.
• Option B: Increased endurance is a long - term effect of exercise, but it doesn't directly explain the immediate feeling of being more alert and energetic in the way endorphins do.
• Option D: Breathing in more oxygen is a part of the exercise process, but it is not the main factor that makes us more alert and energetic in the context of the body's chemical responses.

Answer:

C. During exercise the brain releases endorphins, the chemicals that help improve our mood.