Hoshi was a citizen of the ancient island nation of Yamatai and a Daughter of the Sun at some point during the Kamakura period (c. 1185-1333 CE). She was chosen by Queen Himiko to be her successor.
Muscle contraction happens only when the energy molecule called adenosine triphosphate (ATP) is present. ATP has three phosphate groups that it can give away, releasing energy each time.
Every muscle cell has some amount of ATP. Adenosine triphosphate (ATP) is the way your body uses biochemicals to store and use energy. There is enough ATP in the cell that the muscle can use immediately, but only enough to last for about three seconds. The muscle must replenish the ATP levels quickly, using a high-energy phosphate compound called creatine phosphate.