If you find yourself nodding off during the day, a power nap may be just what you need. Naps help you recharge, refocus, and make up for some lost sleep. A 15-20 minute nap can give you a boost of energy and alertness. Longer naps may help boost memory and creativity. A 30-60 minute nap can help with decision making and learning new things. REM sleep, which is a nap over an hour long, helps with new brain connections and problem solving. Follow the links below to find WebMD's comprehensive coverage about how naps are beneficial, how long you should nap, how to get to sleep, and much more.