If you had to assign one attribute to the kind of people who jump into ice-encrusted lakes for fun, it would probably be: weird. But, if pushed for a second, I bet it would be: healthy.
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Overweight, lethargic, bad skin, thin hair. These are not adjectives often associated with those crazy freezing water enthusiasts. Try: athletic, youthful and toned with good complexions and lots of energy. So, what's their secret? What are the real beneficial health outcomes of regular exposure to cold water and are they available to normal people without masochistic tendencies?
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1. Boosts your immune system
For your body, a sudden and drastic change in temperature constitutes an attack – as anyone who's ever fallen overboard in British waters will concur. And, whilst “attacking” your own body may not sound like a good thing, there is no harm in keeping it on its toes. In fact, quite the opposite.
Scientists from the Czech Republic immersed witting subjects in cold water for one hour, three times a week and monitored their physiology. They found significant increases in white blood cell counts and several other factors relating to the immune system. This was attributed to the cold water being a mild stressor which activates the immune system and gives it some practice.
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2. For an all-natural high
Winter swimmers talk a lot about the ‘high’ they get from cold water – a feeling of wellbeing that's so encompassing that it becomes quite addictive (who doesn’t want to feel truly good, at least once a day?) The cause? Endorphins.
Endorphins are the body's natural pain killers and, in the case of a cold dip, it uses them to take the sting away from your skin. So, to get high on your own supply, all you need to do is jump in a river.
And if you think that sounds dangerously close to the pleasure/pain barrier then you're probably right. The two other primary causes for endorphin release are pain and orgasm.
The cold will also stimulate your parasympathetic system, which is responsible for rest and repair, and this can trigger the release of dopamine and serotonin. These neurotransmitters are a vital part of keeping us happy and low levels of them are linked with depression. Couple this effect with the endorphin rush as you take the plunge and it should make for a warm glow and a wide smile when you re-emerge.
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3. Gets your blood pumping
Being hot brings blood to surface. Being cold sends it to your organs. Both extremes work your heart like a pump. That's why the whole sit in the sauna, roll in the snow, sit in the sauna thing makes people glow. But why is increased blood flow good for you?
Well, it helps flush your circulation for starters, pushing blood through all your capillaries, veins and arteries. It will exfoliate your skin and flush impurities from it, thus helping your complexion (firm-bodied women of all ages around pool sides say it stops cellulite). Evidence also demonstrates that your body adapts to the cold with repeated exposure and this may improve your circulation, particularly to your extremities - no bad thing in the winter months.
You could get these benefits by switching between the hot and cold taps in your shower (or the sauna, snow, sauna thing) but that doesn't sound nearly as fun as quick dip in your local pond followed by wrapping up warm afterwards.
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4. Improves your sex life
The suggestion of a cold shower might bring forth images of hot-headed young men trying to quell wanton urges but research paints a different picture.
In a study with a similar format to the one described above, participants took daily cold baths and were monitored for changes. In addition to some similar results to their Czech counterparts, these researchers also found increased production of testosterone and oestrogen in men and women respectively.
In addition to enhancing libido in both sexes, these hormones also play an important role in fertility. In fact, one technique recommended for men looking to fatherhood is to bathe their testicles in cold water every day. Whatever your procreative desires, a dip of a different sort certainly could add an edge to your sex life.
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5. Burns calories
We all know that swimming is great exercise but there are some extra benefits from doing it in the North Sea that you just won't get from a warm wade in the Med.
Swimming in cold water will make your body work twice as hard to keep you warm and burn more calories in the process. For this sort of exercise, fat is your body's primary source of energy and the increased work rate will increase your metabolism in the long run.
(This article was originally written for the Outdoor Swimming Society)
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More cold water swimming articles:
- 10 Tips for Your First Swimming Expedition by Dan Martin
- Wild Swimming in Oman – The best places for an outdoor dip in the Sultanate
- Wild Swimming Kit List (Hint: you don’t need much)
- Wild Swimming is Not a Sport – Swimming outdoors should be simple and free, not requiring equipment and training
- 12 Reasons to Shower Cold – The only way to start your day
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