Question

We feel hungry after exercise or performing hard work. Why?​

Answer 1

When you use up your glycogen stores, your liver secretes a hormone called ghrelin, which tells your brain it's time to chow. If you go into a workout with already-low glycogen stores, exercising can further deplete them and trigger the release of ghrelin.

Answer 2

Answer:

When you use up your glycogen stores, your liver secretes a hormone called ghrelin, which tells your brain it's time to chow. If you go into a workout with already-low glycogen stores, exercising can further deplete them and trigger the release of ghrelin.

After a physical activity, we take deep breathes and inhale more oxygen. As a result, more oxygen is supplied to our cells and the process of breakdown of food speeds up. Due to this, more energy is released and we tend to feel hungry.