According to sleep and wellbeing expert Professor Chin Moi Chow of the University of Sydney, we need to be taking “coffee naps” in order to make the most of our drinks fix.

“When you drink a coffee, the caffeine stays in the stomach for a while before moving to the small intestine,” writes Prof. Chow, in a piece for The Conversation. “It is from here that caffeine is absorbed and distributed throughout the body. This process, from drinking to absorption, takes 45 minutes.

“But caffeine’s alerting effect kicks in sooner, about 30 minutes after drinking. So, drinking a coffee just before a short nap of less than 15 minutes doesn’t affect the nap as your body hasn’t yet experienced the caffeine hit.”

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