The Western Union Company is an American money transfer and financial services company. The company has more than 486,000 locations worldwide in 200 countries. Western Union offers person-to-person money transfers, money orders, business payments and commercial services.
One such technique to stay awake is to drink coffee (or tea, for some). Drinking hot beverages is very common for students while cramming in their final studying on the eve of exams. Somehow, drinking coffee or tea (caffeine-rich beverages) helps you stay awake.
It probably works out that a nap of about 15 minutes is best, he says, because once you get beyond 20 minutes, you risk a deep sleep and you can be much more groggy when you wake up. A lot of people take caffeine after they wake up, but you have a window of opportunity of 20 minutes, so it will help you wake up.