Here, we’ll cover everything you need to know about napping: when to do it, how long to nap for, and the science behind why some people wake up refreshed while others feel groggy., Napping is one of the best (and easiest!) things that you can do for your health, work performance, and general well-being. Scientific evidence has shown that napping can improve waking performance and alertness, even after a normal night of sleep., As the science of sleep evolves, researchers continue to study how napping may influence a person’s health. Shorter, power naps can boost alertness. Longer naps, especially those lasting an hour or more, have been linked with obesity and increased cardiovascular disease risks. Oftentimes, these findings volley back and forth., There’s a physiological reason for midday exhaustion and why napping can help combat the feeling. Napping can help increase alertness, memory and cognition. It’s recommended to nap for only 15-20 minutes., Studies show that napping can enhance alertness, boost mood, improve memory, and even lower stress. But not all naps are created equal. When, how long, and where you nap all play important roles in whether you feel refreshed or groggy afterward. What’s the Science Behind Napping?, One of the benefits of napping can be a pause that refreshes, and there is plenty of scientific evidence to substantiate what nappers feel: mentally sharper, more energetic, i.e., caffeinated without the caffeine..