1 Chemically, ATP is an adenine nucleotide bound to three phosphates. 2  There is a lot of energy stored in the bond between the second and third phosphate groups that can be used to fuel chemical reactions. 3  When a cell needs energy, it breaks this bond to form adenosine diphosphate (ADP) and a free phosphate molecule.
calf muscle pump. calf muscle pump. an action of the calf (soleus) muscles in which the muscles contract and squeeze the popliteal and tibial veins, forcing the blood in those veins to move upward toward the heart. Also called soleus pump.
Muscles Promote Insulin Sensitivity. One of the most important functions of muscles in metabolic health is their ability to store glucose (carbohydrates) as glycogen. They then use this stored glycogen as fuel every time you need to move.uscles Improve Disease Recovery. Another health benefit of muscles is their ability to create a âsafety netâ of protein that your body can draw on at times of increased need. Protein is one of the most important structural components in your entire body, and muscles play a key role in regulating protein availability.