Sometimes we do experience energy physically... Like the heat. We cannot see but we can feel the hotness in temperature we can experience it physically when our bodies become hot and we start to have Temporary loss of consciousness induced by insufficient flow of blood to the brain. In Similar fashion we can feel cold, cold is nothing but the absence of heat. We can feel the impact when someone punches us. And agreed there is nothing without your perception of energy... If you cannot be aware of things by your senses then there exists nothing.