Mitochondria are membrane-bound cell organelles (mitochondrion, singular) that generate most of the chemical energy needed to power the cell's biochemical reactions. Chemical energy produced by the mitochondria is stored in a small molecule called adenosine triphosphate (ATP).
A good warm-up will raise your body temperature, which is particularly helpful to your muscles.
Explanation: As your muscle temperature increases, oxygen becomes more available to your muscles, allowing them to contract and relax more easily – so you'll be able to perform more strenuous tasks with ease.
