Have you ever taken a ‘coffee nap’?

A coffee nap — where you drink coffee right before a short nap — can be more effective than either coffee or napping alone.

Here’s why it works: caffeine takes about 20 minutes to hit your system — right around the time your nap is ending — so you wake up with a double shot of energy.

Nutritionist Nichola Ludlam-Raine explains “coffee naps can improve reaction times, alertness and cognitive function — especially during an afternoon slump."

But, “It’s important to keep naps short — no more than 20 minutes — otherwise, you risk entering deeper sleep, which can leave you feeling groggy.”