Question

why does an athlete breathe deeper and faster than usual after finishing the race?

Answer 1

This is because the athlete needs more oxygen as many of the oxygen is used during running.By doing so oxygen supply can be increased and intense energy can be reattained.

Answer 2

Answer:

An athlete needs to supply extra energy to his muscle cells which have worked hard during running. For this, he breathes faster and deeper so that more oxygen is supplied to the cells. This speeds up the breakdown of food and as a result, more energy is released.