The track coach notices that his star runner is running quicker than ever before, but quickly gets tired and shows evidence of d
epression after the race. The coach should suspect that the runner might be taking __________. a. growth hormones
b. amphetamines
c. anabolic steroids
d. creatine
<span>Creatine is used to convertfood into energy, thus, the supply of the energy continues after creatine supplementation. This leads to rigrous ATP production and contraction of muscles. However, due to prolonged exercise, creatine levels decreases and causes fatigue, which might be the reason of depression in the athlete, after the race. So the correct answer is D.</span>
