I came across this article when I was looking for healthy ways to pull an all-nighter in preparation for my exams. I found it useful and I’m hoping you will find it useful.   Source: http://www.webmd.com/sleep-disorders/excessive-sleepiness-10/natural-tips-sleepiness  By Camille Peri  Reviewed by Louise Chang, MD    With more and more of us getting less and less sleep, it’s tempting to reach for a Red Bull or an espresso when we feel sleepy at work. But consuming caffeine to combat sleepiness can lead to a vicious cycle.  The java jolt that helps you stay awake can take up to eight hours to wear off. Caffeine can also reduce your sleep time, alter the normal stages of sleep, and decrease the quality of your sleep.  How can you stay awake naturally? Try some of these 12 jitter-free tips to take the edge off sleepiness.  1. Get Up and Move Around to Feel Awake  In one well-known study, Robert Thayer, PhD, a professor at California State University, Long Beach, studied whether people were...