Question

why the breath of an athlete is so fast after end of Race​

Answer 1

during the time of race an athlete need a great energy and while running at that much speed most of the energy of athlete get reduced and for the respiration for new energy released it need more oxygen and due to this at the end of the race the breath becomes very fast

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.