We usually have caffeinated beverages to stay awake, but one sleep doctor has shared some contradicting advice. She says you should drink a coffee before you want to have a nap in a trick that she calls the “nappuccino”. Sleep doctor says drink coffee before a napSpeaking on Steven Bartlett’s Diary Of A CEO podcast, Dr. Cheri Mah, a sleep doctor from Sunnyvale, California, said you should drink your favorite caffeinated beverage minutes before you want to have a quick sleep. The caffeine will kick in around 15 minutes after consuming it, but the trick is to fall asleep before this and only hav…