Our muscles burn fuel for the energy to contract. Muscles do not create energy (deprecated), they use energy. These contractions create power, which is expressed as force and velocity. Wikipedia
Power is created through different kinds of contractions (concentric, eccentric, isometric). Force, at a velocity, is transmitted to the partner. The structure of the arch of connection allows for even very small and slow forces to be transmitted, and it helps us to manage respond to large and fast ones.
