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What is my circadian rhythm?

Circadian rhythm | scooms duvets & bedding

Most animals and plants have a built-in circadian rhythm, an internal system that in humans regulates feelings of sleepiness and wakefulness over roughly a 24 hour cycle.

 

Circadian rhythm

Your circadian rhythm causes your level of wakefulness to rise and dip throughout the day. Most people feel the strongest desire to sleep between 1:00pm and 3:00pm and then again between 2:00am and 4:00am, but this can vary from person to person. That’s why some people are “morning people,” while others function best in the evening.

Your circadian rhythm is also known as your sleep/wake cycle or body clock. The study of circadian rhythms is called chronobiology

Your circadian rhythm can change as you age. For example; teenagers sleep for more total hours, as well as going to bed and waking up later.

 

Hypothalamus

It is controlled by the hypothalamus region of the brain. Your circadian clock checks its accuracy each day using external environmental cues, principally light or darkness. Though it does not actually require light to function and can function quite accurately even when people are completely cut off from daylight.

 

Sleep routine

Circadian rhythms may be adjusted by up to two hours or so either way according to an individual’s make up. Some people (morning people) tend to wake up early and are most alert during the first part of the day. Others (evening people) are most alert in the late evening and prefer to go to bed late. In these people, the timing of their circadian cycle is shifted; an effect that is at least partly encoded in their genes.

If you follow your body’s natural cues about when to go to sleep and wake up and have a good sleep routine, your circadian rhythm should stay balanced. A change in your schedule can disrupt your body clock, effecting the quality of your sleep.

 

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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 King (UK Super king), Queen (UK King),  Full (UK Double) and 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.

Check with 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
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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