TAURUS (April 20-May 20): Nobel Prize-winning physicist Richard Feynman admitted physicists can't really define "energy," let alone understand it. "We have no knowledge of what energy is," he said. "We don't have a picture that energy comes in little blobs of a definite amount." It's unlikely you'll advance scientific understanding of energy, but you almost certainly boost your natural grasp of what energy feels like inside and outside your body. You develop a more intuitive knack for its ebb and flow and find tips on how to make it work for rather than against you. You're smart, but you'll get even smarter.