dimanche, septembre 22, 2013

Chateau Charonne

1 commentaire:

testoultra a dit…

Flexibility is also important. Muscles move in two ways: they contract and they stretch. The faster they can contract the more power you have, and the farther they can stretch the more potential, or stored, energy they have. testoultra Much in the same way that an elastic band stores energy when stretched. As soon as you release it, that energy is released - have you ever used a catapult when you were a kid? You must have. You pull the rubber back and then release it. The stone or ball bearing soars out of it with a load of energy that is simply the energy you stored when you pulled it back.