Question

what happens if the athlete don't take a deep breath before starting the race

Answer 1

This is the answer.I have attached a pic to esplain

Answer 2

If the athlete do not take deep breath before starting the race. musceles cell of his body will not get enough oxygen to produce energy so they will produce energy anaerobically which leads to the production of lactic acid which cause pain in body. Second thing he feel tired so easily and he can't complete his race.