Are power naps a five-fold memory booster?

NHS: "A 45-minute power nap can boost your memory five-fold," reports The Independent.
This headline is based on a study that looked at the impact of napping on healthy volunteers’ ability to remember single words or word pairs in a memory test. After being shown the words for the first time and then being tested on them, volunteers were split into two groups. The first group was allowed a 90-minute nap and the second group were made to stay awake.

Napping beyond age of 2 linked to poorer sleep quality in young children

BMJ: Napping beyond the age of 2 is linked to poorer sleep quality in young children, although the impact on behaviour and development is less clear - cut, finds an analysis of the available evidence published online in Archives of Disease in Childhood.

Know how to sleep

 Author: Dr Peremarty MD

«If we know how to sleep, we shall know how to wake» Alain (Propos)
"35 or 45 hours a week? "
Sleep duration is not, alone, a sufficient criterion to judge its quality and efficiency.

There are four key points to understand... to know how to sleep :