Question

Why we feel exhausted after exercising?

Answer 1

Answer:

You need the rest for your muscles to heal and properly absorb the energy needed for workouts. The less time you sleep; the less energy you will have for your workout. This will cause you to get worn out fast and feel sleepy afterward.

Answer 2

Answer:

This is because during exercise our body uses all the energy available.

Explanation:

When we undertake constant exercises, there may be shortage of oxygen. Therefore, our muscles and other tissues perform anaerobic respiration. In this process, lactic acid is formed. The body makes lactic acid when it is low in the oxygen it needs to convert glucose into energy. Lactic acid buildup can result in muscle pain, cramps, and muscular fatigue.