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 & WEIGHT GUIDE

These are standard UK bedding sizes so if you know your mattress size you can easily work out which duvet size you need.

Duvet size Duvet weight UK mattress size
Single 135 x 200cm (4ft 5" x 6ft 7") All seasons - 788g
9 tog - 486g 
4.5 tog - 302g
2.5 tog - 220g
90 x 190cm
Double 200 x 200cm (6ft 7" x 6ft 7") All seasons - 1168g
9 tog - 720g
4.5 tog - 448g
2.5 tog - 320g
135 x 190cm
King 225 x 220cm (7ft 4" x 7ft 3") All seasons - 1478g
9 tog - 911g
4.5 tog - 567g 
2.5 tog - 400g 
150 x 200cm
Super king 260 x 220cm (8ft 6" x 7ft 3") All seasons - 1671g
9 tog - 1030g
4.5 tog - 641g
2.5 tog - 480g
180 x 200cm 

 

DUVET TOG RATING GUIDE

Young children can overheat so if they are old enough to be using 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

 

PILLOW SIZE GUIDE

Our pillows come in two sizes and provide medium support.

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.

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

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