In Spidersilk the novel, the main character Mark utilizes lucid dreaming every day he goes to sleep. Often, he ends up fighting the intruders or discovering clues to help him save his friends and their possessions. In reality, lucid dreaming is actually possible too. Many people actually have lucid dreams without even knowing it. Now, scientists are saying that lucid dreaming can help you improve your skills. So, with a little practice you could be working on some studying or personal skills without even having to be awake. 

For more information on this study checkout this link:

http://brainblogger.com/2016/09/08/can-you-improve-physical-skills-while-dreaming/