What if you could use the hours you sleep at night to train yourself physically? It’s long been known that when you picture yourself performing a sport, the same neurons are fired up as if you were actually playing it. This act strengthens your motor connections between the brain and the body, and now researchers believe it’s possible to teach yourself to lucid dream at night in order to boost these skills while you sleep. See here the art of lucid dreaming, and how it can be just as effective as physical training.