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  • Feeling groggy, tired or unmotivated in the afternoon?

  • Using coffee, soda and energy drinks

  • we often try to push through the dreaded long day

  • yawning through the hours and fighting the fatigue.

  • But it just so happens that the solution

  • is the very thing we've been trying to avoid all along,

  • sleep.

  • Truth is, the power nap

  • is perhaps the most effective way

  • to rejuvenate your brain.

  • There are four main stages of your sleep cycle.

  • The first two are relatively light sleep,

  • while the third brings you into a deep slumber.

  • The final stage known as rapid eye movement,

  • or REM for short,

  • is where most of your dreams begin.

  • The benefits of napping are tied to the length

  • of time in which you are asleep.

  • Naps 30 minutes in length

  • generally only allow time to enter these first stages.

  • In stage 1, slow eye movement begins

  • and if woken you often feel as though you didn't even sleep.

  • But as you continue into stage 2

  • your brain begins to inhibit processing.

  • and ignores external stimuli that it deems non-dangerous

  • in order to relax you and give you a tranquil sleep.

  • It also begins memory consolidation,

  • in which information you learn is processed.

  • Waking out of these stages has shown benefits including;

  • increased productivity,

  • increased cognitive function,

  • enhanced memory,

  • boosted creativity

  • and most importantly, feeling less tired.

  • Beyond 30 minutes you enter stage 3

  • and experience something known as sleep inertia when awakened.

  • Because your body is coming out of a deep sleep,

  • motor dexterity is decreased

  • while grogginess and the longing to go back to sleep increases.

  • Many people falsely deem naps non-beneficial for themselves,

  • but the truth is, they have simply napped too long.

  • As the benefits of napping become clearer

  • many nap salons have opened throughout Japan,

  • where workers can pay to have a brief lunchtime nap on a daybed

  • to increase alertness at work.

  • So maybe it's about time we all start sleeping on the job a little more.

  • Just tell your boss "Science said so".

  • Got a burning question you want answered?

  • Ask it in the comments or on facebook and twitter.

  • And subscribe for more weekly science videos.

Feeling groggy, tired or unmotivated in the afternoon?

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B2 H-INT sleep nap napping stage increased length

The Scientific Power of Naps

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    Fu Jung Lai posted on 2012/12/20
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