Researchers in Germany have found that a brief nap does wonders for your memory.

According to a study published in the journal Neurobiology of Learning and Memory, researchers at Saarland University have found that a quick “power nap” improves someone’s memory fivefold, UPI reported.

The study examined 41 people who were asked to remember 90 words and 120 word pairs, ensuring that the word pairs used unrelated words like “milk” and “taxi” so people couldn’t easily remember them. Researchers then had half the participants take a nap of less than 90 minutes and the other half watch a DVD that involved looking at the words.

Surprisingly, those who skipped study and got some shut-eye were much better at remembering the words, and sleep of just 45 to 60 minutes could boost memory by a factor of five, said the researchers according to the report.

The findings indicate that taking a quick nap while in the office or at school could dramatically improve productivity while working or studying.

Scientists have long suspected that naps have significant health benefits in certain circumstances. Napping by adults in Western culture at work is considered socially unacceptable in general, but the practice of napping is actually quite common in hotter climates where a large midday meal is served and time is allowed for napping before returning to work. This is known as a “siesta.”

Napping has been associated before with a significant reduction in coronary mortality, possibly reducing stress on the cardiovascular system. However, more research needs to be done in this area.

A “power nap” is sometimes used interchangeably with just regular naps, but it is more specifically referring to a nap that is shorter than 20 minutes intended to give a quick boost of energy to the napper. It is believe to increase alertness and happens before deep slow-wave sleep sets in, which would cause the person to feel groggy and disoriented.