I’m a doctor and this is why I never have the heating on at night

TEMPERATURES have plunged in the UK, with many of us blasting our heating and loading up on extra blankets.

But one doctor has warned that if you want a good night's sleep, then you should turn down the thermostat.


The NHS recommends that adults need between six and nine hours sleep every night.

This can vary from person to person and everyone has different sleep schedules and needs.

Having a good sleep is important as it keeps us well rested and allows both your mind and body time to recharge.

Posting on TikTok Dr Karan Rajan explained that sleeping in a cold room could actually be good for your health and even reverse aging.

He said: "Not only does melatonin increase sleep propensity, it's also a hormone that promotes anti ageing.

"It reduces oxidative stress damage and the levels of cortisol, it reduces systemic inflammation and it's free."

Dr Rajan also said that the cold can help if you are suffering with insomnia, which is a sleep condition in which a person has difficulty staying asleep for long enough to feel refreshed the next morning.

"Our body's core temperature needs to drop to initiate sleep.

"So a cooler temperature gets you closer to the target sleep temperature of your body, so you fall asleep a lot faster", he said.

He also added that more cold means more dreams.

Dr Rajan said: "Warmer temperatures means your brain and body are more active trying to cool you down.

"This increased brain activity limits the amount of REM and slow wave sleep your body needs to recharge".

REM (rapid eye movement) sleep is a deep form of sleep, so getting as much as possible will keep your energy levels up.

Humans need deep sleep to repair their muscles – and even surface wounds heal quicker during period of deep sleep.

For an average adult who needs between seven and nine hours sleep, they should have at least 1.5 hours in deep sleep, including REM.

Dr Rajan added that a cold room could also improve your metabolic health.

He said: "There is research to suggest that cold exposure can increase the amount of brown fat produced by stem cells.

"Brown fat helps to regulate cholesterol, blood glucose and improves insulin sensitivity".

He added that being too cold isn't good, and neither is too hot and that when it comes to temperature, you need to find the 'Goldilocks' measure, which is just right for you.

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