What is REM sleep?

REM sleep | scooms

REM sleep is the rapid eye movement that occurs during sleep. When you sleep, your brain moves through five different stages; one of these stages is REM sleep. You enter REM sleep within the first 90 minutes of falling asleep and, as the sleep cycle repeats throughout the night, REM sleep occurs several times each night.

 

HOW MUCH REM SLEEP IS NEEDED?

A whole sleep cycle takes 90 to 110 minutes, so you will probably sleep four to six complete cycles each night. The time spent in stage 5, REM sleep, should increase with each cycle as the time spent in stage 4 deep sleep decreases. If you don’t get enough REM sleep each night you’ll feel pretty tired the next day and probably rather foggy headed.

 

WHY IS REM SLEEP IMPORTANT?

REM sleep has two important roles:

  1. Restoration - Your body restores itself during REM sleep and without it can’t fully heal itself from the activities of the day.
  2. Memory consolidation and renewal - REM sleep aids your ability to remember and learn. Babies sleep the longest duration of REM sleep and older people sleep the least. Dreams are most vivid during REM sleep, which scientists believe helps the brain to manage emotions and stress, and process information and memories. 

 

WHAT ARE THE STAGES OF SLEEP?

Stage 1 - Light sleep lasting around five minutes.You may still be aware of your surroundings.

Stage 2 - Deeper sleep for 45-50 minutes, but you may still easily wake up if disturbed.

Stage 3 - A transitioning phase of 5 minutes much deeper sleep.

Stage 4 - The phase of deepest sleep which lasts for approximately 15 minutes.

Stage 5 - REM sleep for about 25 minutes.

 

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Bedding size guide

DUVET SIZE GUIDE

These are standard UK bedding measurements so if you know your mattress size, you can easily work out which duvet size you need. (Width x length.)

UK sizes Duvet size Mattress size
Single 135 x 200cm (53 x 79") 90 x 190cm
Double 200 x 200cm (79 x 79") 135 x 190cm
King 225 x 220cm (89 x 87") 150 x 200cm
Super king 260 x 220cm (102 x 87") 180 x 200cm 

US/CANADA BEDDING SIZES: Approximate matches to UK sizes are US King/UK Super king, US Queen/UK King,  US Full/UK Double and US Twin/UK Single.

EUROPEAN BEDDING SIZES: Each size - Single, Double, King and Grand king - is a little larger than the UK equivalent.

Measure your mattress to see which size bedding you need: our UK v European v US mattress comparison guide.

 

DUVET TOG RATING GUIDE

Young children can overheat so if they are old enough to use a full size bed, we recommend using a single size 4.5 tog duvet.

 Tog rating Season / heat Feel
2.5 tog High summer / hot sleepers Light thermal insulation
4.5 tog Summer Lower thermal insulation
9 tog Spring & Autumn Cosy medium heat
All season (4.5 + 9 tog) Winter / cold sleepers Very warm

 

DUVET FILL WEIGHT GUIDE

Our goose down duvets have high 700 fill power. Fill weight is measured in GSM (grams per square metre).

Fill weight (not total duvet weight)
Single All seasons - 788gsm
9 tog - 486gsm 
4.5 tog - 302gsm 
2.5 tog - 220gsm
Double All seasons - 1168gsm
9 tog - 720gsm
4.5 tog - 448gsm
2.5 tog - 320gsm
King All seasons - 1478gsm
9 tog - 911gsm
4.5 tog - 567gsm
2.5 tog - 400gsm
Super king All seasons - 1671gsm
9 tog - 1030gsm
4.5 tog - 641gsm
2.5 tog - 480gsm

 

PILLOW SIZE GUIDE

Our pillows come in two sizes and provide medium support. (Width x length.)

Standard  50 x 75cm
King 50 x 90cm

 

BED LINEN SIZE GUIDE

Our fitted sheets are deep fit, up to 40cm / 15.7" mattress depth. And our duvet covers fasten with large, easy to use buttons. (Width x length.)

Duvet cover Fitted sheet Flat sheet Pillowcase (pair)
Single 140 x 200cm 90 x 190cm 180 x 275cm
Double 200 x 200cm 135 x 190cm 230 x 275cm 50 x 75cm (Standard)
King 230 x 220cm 150 x 200cm 275 x 275cm 50 x 90cm (King)
Super king 260 x 220cm 180 x 200cm 305 x 275cm

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