Question

Bradley decides one day to run a marathon without any training. After ten minutes has elapsed and Bradley has run half a mile, he begins to get cramps in his thighs. He is also breathing very rapidly. What is causing the cramps on Bradley's legs?

Answer 1

The build of of lactic acid

Answer 2

The correct answer is "lactic fermentation".

Step-by-step explanation:

Lactic fermentation is a type of anaerobic respiration that occurs in muscle cells as a way to produce energy when not enough oxygen reach the cells. This happens when a person is performing anaerobic exercise for a considerable period of time or without proper training, like Bradley that tried to run a marathon without any training. Lactic fermentation produces lactic acid build up on muscles, which is what is causing the cramps on Bradley's legs.