Overheating in Bed

Overheating in bed reduces your rapid eye movement sleep, and the benefits derived from a good night’s sleep.


Overheating in bed reduces the quality of sleep.  We tend to sleep better when our body is cool.  In fact, the reason many people recommend a warm bath before going to sleep is because the drop in temperature experienced after having the bath brings on feelings of drowsiness.

Bed temperatures above 32 degrees C reduce rapid eye movement (REM) sleep, which is very important for quality sleep.  Overheating during REM sleep can be disruptive.

Without good REM sleep, you can wake up feeling unrefreshed, tired, and vague.  Some feel like they have a hangover, without having been drinking.

Trouble is, what one partner thinks is ‘sleeping cool’ the other partner in bed is freezing.  That’s how the Compatibility Blanket originated.

Associate professor Peter Cistulli, President of the Australasian Sleep Association says that doonas/duvets trap sleepers in a heat layer.  He agrees with others that blankets are more effective than doonas/duvets for regulating temperatures in bed – and they can provide a more uniform temperature than doonas.

Sleeping slightly ‘cool’ is a lot easier under blankets than under a doona/duvet – especially for the person who feels the heat.  If you do care about your partner’s sleep quality (and who doesn’t?) – listen to them when they say they’re too hot.

Apart from losing valuable sleep – overheating in bed, according to renowned skin specialists Dr. Hugh Molloy and Dr. Garry Egger is also associated with:

  • ‘Doona Eyes’ – darkening of the skin around the eyes – with sufferers mentioning itchiness, flaking, swelling of the eyelids, and sleep in the eyes on waking.
  • Facial Dermatitis.  If facial rubbing occurs during the night other skin changes can become noticeable.  It can cause blackheads and whiteheads and acne on women who are well beyond puberty.
  • Peri-oral dermatitis.
  • Grover’s Disease.  Itchy red lumps on the upper chest of middle-aged men, a major factor being sweat entrapment.
  • Facial Excrescences.
  • Atopic Exzema and acne.
  • Hair and Scalp problems.

Source: Good Skin book, Dr. Hugh Molloy and Dr. Garry Egger, Allen and Unwin.

FURTHERMORE in order to sleep your core body temperature needs to cool down by 0.3 of a degree C . The older we get, the harder it is for the body to achieve this.  Source:  What’s Good for You, Channel 9, June 12, 2006.



  • Use Blankets and Sheets instead of doonas/duvets.  Use woollen and cotton blankets in preference to acrylic, mohair and angora because the latter ones retain more heat during the night.  The number of blankets used should make you feel ‘comfortably cool’, and the most ‘warm’, but never hot.  Re-train yourself for a better night’s sleep.
  • Don’t overheat the bed before getting in.  A temperature drop (especially after a warm bath) can help trigger sleepiness.  Your core body temperature needs to cool down to go to sleep.
  • If you can’t sleep, peel off some bed coverings during the night.
  • Listen to your bed-partner, especially if they feel the heat.
  • Don’t rug-up to go to bed.


Being “overheated” in bed becomes complicated when what one partner thinks is snugly and warm the other partner thinks is a furnace!

In about 80% of couples one partner is hotter than the other, and at least one of them is receiving sub-standard sleep if they are sleeping in the same bed, with the same coverings.  Generally men are hotter than women.  The temperatures can reverse after menopause, when some women heat up permanently (after the hot flushes stage) and find they are the ones wanting to shed blankets when they previously felt colder.

The Compatibility Blanket was invented by Sleepless No More to solve the problem of temperature incompatibility between partners in bed.  It is the only blanket in the world that addresses this common sleep problem.

Blankets, and particularly the Compatibility Blanket, allow couples to regulate bed temperatures more effectively than doonas/duvets.

For the ultimate bedcovering buy a Compatibility Blanket now.

The Compatibility Blanket allows you both to:

  • Regulate your sleeping temperature for a good night’s sleep, as well as
  • Solves the battle of the bedclothes between hot and cold bed partners.

For more information about the Compatibility Blanket click here.