There are two heart centers in every living being, one relating to male energy, and the other to female energy. The male heart center lies two fingers above the nipple line, and the female center another two fingers above that. These centers are mobile, and can, in certain moments, be united. The energy of creation in this reality comes from these polarities interacting. Much like two notes closely related 'beat' in the air, so too these two energies 'beat' with each other in our consciousness.