DR MICHAEL MOSLEY: The truth about what saunas do to your 団体／死体... and why it might just save your life

Are you on Instagram? If so you may have noticed that having a sauna, or at least filming yourself having one, seems to be the next big thing.

Celebrities such as David Beckham, Guy Ritchie and Manchester City winger Jack Grealish have recently been enthusing about the 利益s of a good old sweat in their own 私的な sauna, followed by a ten-minute cooldown before bed.???

Like 冷淡な-water swimming, having a sauna is a way of 押し進めるing your 団体／死体 outside its 慰安 zone, and that comes with a host of 可能性のある health 利益s.

The idea of getting into an enclosed space with others and getting hot is hardly new. On the Orkney islands, off the coast of Scotland, archaeologists have 設立する 古代の 石／投石する structures dating to 4000BC which 含む areas for heating and then bathing, much like a modern sauna.

And Native Americans have long gathered in ‘ sweat 宿泊するs’, structures lined with 肌s and then filled with hot 激しく揺するs or other sources of heat, where they 株 songs and stories, before going out into the 冷淡な 空気／公表する to 回復する.

Jack Grealish has 明らかにする／漏らすd his new night-time sauna 決まりきった仕事 with partner Sasha Attwood

These days the people most enthusiastic about saunas are the Finns; によれば the tourist 場所／位置, Visit Finland, there are 概略で three million saunas in Finland, for a 全住民 of under six million. That’s 概略で one sauna for every two Finns.

The last time I had a sauna was in Finland a couple of years ago ― I was advised to bring a towel with me, to sit on, as the 木造の （法廷の）裁判s would さもなければ sear your tender parts (a good tip, it turns out).

It was a little strange to start with, but within a few minutes I was chatting with other naked or 半分-naked people in the room ― saunas are 極端に sociable.

After 15 minutes, I finished off with a きびきびした, 冷淡な にわか雨, though you may be 申し込む／申し出d a 下落する in a 冷淡な-water bath, or even a quick dash into the sea if you’re using the sort of pop-up saunas now beginning to appear on the British coastline. After a 冷淡な 下落する, some people like to go 支援する into the warmth, then out to the 冷淡な again. It’s called hot-冷淡な cycling.

I felt invigorated afterwards, but what are the 利益s? The first thing that happens in the 激しい heat is that your 肌 and 核心 団体／死体 気温 増加する, not only making you sweat but your heart 率 急に上がるs (though you might not notice it yourself).

So having a sauna has many of the same 影響s on your 団体／死体 as a きびきびした workout, which could explain why it seems to be good for the heart.

In 2015, 研究員s at the University of Eastern Finland looked at the sauna habits of 2,315 middle-老年の Finnish men (老年の 42 to 60) ― over an 普通の／平均（する） of a 21-year period, those who’d had a sauna most days of the week were 50 per cent いっそう少なく likely to have had a 致命的な heart attack than men who had a sauna once a week or いっそう少なく.

In a follow-up 熟考する／考慮する, men who 報告（する）／憶測d having たびたび（訪れる） saunas were also 66 per cent いっそう少なく likely to be 診断するd with dementia.

At the time the 研究員s 認める they didn’t know the 推論する／理由 for this, though they thought it might be the results of a combination of ‘time spent in the hot room, the 緩和 time, the leisure of a life that 許すs for more 緩和 time or the camaraderie of the sauna’, 追加するing, ‘cle arly time spent in the sauna is time 井戸／弁護士席 spent’. People used to worry that saunas could 原因（となる） heart attacks and 一打／打撃, but if you’re さもなければ healthy, the opposite is true.

Those same Finnish 研究員s did another 熟考する／考慮する, published in Neurology in 2018, which 含むd both men and women this time, and was 焦点（を合わせる）d on the 危険 of having a 一打／打撃.

They 設立する that people who had saunas most days of the week were 61 per cent いっそう少なく likely to have a 一打／打撃 than those who had a sauna once a week or いっそう少なく ― かもしれない because having a sauna 減ずるs the stiffness of your arteries and その為に 減ずるs your 血 圧力.

What about other health （人命などを）奪う，主張するs? Many people believe that having a sauna will help them sweat out toxins, but there is no real 証拠 this is true. On the other 手渡す there have been 熟考する／考慮するs showing it can 上げる mood, which could help explain why the Finns 定期的に 最高の，を越す the 年次の World Happiness 報告（する）／憶測.

If you decide to give it a go, make sure you are drinking plenty of water, stick to a 最大限 of 15 minutes per 開会／開廷／会期 and if you have any 疑問s about your heart, 協議する your doctor before stripping off and 長，率いるing in.

He snores, she sleep eats?

My wife Clare and I have very different sleeping problems. I tend to wake up in the night to go to the loo and can struggle to get 支援する to sleep.

Clare sleeps soundly but, once a week, gets up in the middle of the night and starts looking for 患者s (she is a GP) in the cupboards or under the bed. She has parasomnia (which 原因（となる）s unusual behaviour while you sleep).

While that’s our night-time experience, 研究 存在 published in June in Sleep 薬／医学 Reviews, 最高潮の場面s some proven ありふれた differences between men and women’s sleep.

For instance, women are more likely to を煩う insomnia and four times more likely to develop a sleep-関係のある eating disorder (sleep eating). Men tend to be フクロウs (preferring to go to bed and wake up later) and three times more likely to develop sleep apnoea (where you stop breathing during the night and which can 原因（となる） snoring). Hopefully all this insight will lead to better sleep all 一連の会議、交渉／完成する.

If you go 負かす／撃墜する to the 支持を得ようと努めるd today...??

Spring 先触れ（する）s the return of biting pests, and while most are 害のない, there’s one to be 用心深い of ― ticks.

These can pass on Lyme 病気: 早期に 調印するs 含む a spreading, circular 無分別な (like a bull’s 注目する，もくろむ on a dartboard) typically around 14 days after you’ve been bitten, and maybe flu-like symptoms. Thanks to warmer winters, the number of people 影響する／感情d is 推定する／予想するd to rise.

If Lyme 病気 is caught 早期に, it can be cured by 抗生物質s. But if 行方不明になるd (which is often, as doctors aren’t trained to look out for it), it can go on to 原因（となる） swollen 共同のs and heart 損失, and neurological problems such as memory loss.

早期に 調印するs of Lyme 病気 含む a spreading, circular 無分別な (like a bull’s 注目する，もくろむ on a dartboard)

This is what happened to Lizanne, a former nurse, who 接触するd me. She became unwell in 2010, with 多重の symptoms. Over the next 14 years she saw more than 200 顧問s from 31 specialities, 含むing neurology, rheumatology and gynaecology.

Last June a cardiologist 診断するd Lyme 病気 影響する／感情ing her heart ― but the 治療, high-dose 抗生物質s, didn’t help and she hasn’t been 申し込む／申し出d anything else. The ticks that carry the bacteria that 原因（となる） the 病気 are typically 設立する in grassy and wooded areas.?

So when out walking, tuck your trousers into your socks and consider using insect repellent. If you develop the classic 無分別な, see your doctor ― also check the charity’s website lymediseaseaction.org.uk.

Unrealistic, wishful thinking may be a bad thing ― a 最近の Amsterdam University 熟考する／考慮する 設立する when people are put into 状況／情勢s where they feel anxious, they are far more 傾向がある to wishful thinking. Most of the time that doesn’t 事柄, but if, for example, you’re told you have a 可能性のある health problem, but say to yourself ‘I’m sure it will be 罰金’, then that wishful thinking could 妨げる you from taking 活動／戦闘s that could save your life.?