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Cold water swimming in Canada

I don’t wear neoprene. I have a wetsuit, I wore it once to try it on for size, but then I discovered chilly swimming a few weeks later and haven't touched it since. Don’t take it personally, like many open water endurance swimmers, I pride myself on swimming by marathon/channel rules. But who cares, right; if neoprene gets you in the water and helps you stay there, especially cold water, I say go for it. No wetsuit shaming here, though I do get a good chuckle sometimes when we notice differences between marathon/cold and triathlon swimmers. Mick O’Kane agreed to let me re-share this pic of him from a few (lotta) years back, sometimes swimming skins is a strange and lonely place...

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Mick took a lot of flack for posting that pic on a favourite swim forum at the time, but I will say relative to cold water training, advice coming from triathlon forums/blogs at times takes a very different approach from marathon and cold water swimmers. It’s more common to refer to “handling” cold water or “making it more bearable” through the use of neoprene rather than learning to adapt to it without through repetitive habituation and acclimatization. I’m not making a sweeping generalization, some sites find a decent balance between both, but few explore the science or methodology behind physiological adaptation. And there are also lots of other reasons why most triathletes stick to wetsuits, racing advantages specifically, such as additional buoyancy and added glide and speed through reduced surface friction. And well, not everyone cares to work on adaptation, some people simply hate the cold and neoprene is an easy way to stay warm. I say, why swim if you can’t be fully in nature with water, that’s half the joy. But hey, it's totally up to you, of course. Don't let anyone tell you otherwise.

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But even wearing a wetsuit, if you’re planning to swim in cool or cold water, you should still be working on adaptation: don’t let the wetsuit provide you with a false sense of security about your ability to “handle” cold without testing your limits first. They aren’t a guarantee against getting even somewhat cold, especially if you haven’t done any preparation and considering parts of you are still exposed. Suit up, get out there early on to practice being in cold water, don’t wait until your swim to figure it out. You have other options too, apart from a full wetsuit, such as neoprene skulls caps, gloves and booties (although if you're going to be racing, check your event to see if these are permitted, they are not allowed at winter swim or ice events). For some people, wearing these along with a regular swim suit alone provide sufficient protection from the cold. Up to you, of course.

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The point I want to make is this: if you’re looking to adapt and become better at swimming in cold water, neoprene or not, you might want to consider taking your advice from experienced cold water swimmers. Even if you’re not planning a channel swim, racing in winter competitions, or an ice mile, you’ll learn a lot from those who have dedicated themselves to the sport of swimming cold au naturel. And, think about your personal goals - are you actually training for something that requires a certain level of adaptation to cold water temps, for which neoprene should probably be avoided, or are you simply looking for a little added warmth or protection so that you can get in there and enjoy the moment?

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How do I know if neoprene is right for me?

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Chances are if you’re still reading this post, you fall into the category of people looking to adapt to cold water, so here was my approach to figuring out if neoprene was needed when I first started staying past the summer season:

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  • My goal = to have fun first, but also adapt as much as possible to train for events later on

  • I embraced that adaptation to cold water takes exposure and repetition, period, there are no quick tricks;

  • The best time to start work on adaptation is at the end of the summer season, so that as the water gradually cools, I continued swimming and safely testing my physiological limits;

  • Note if you regularly swim with a wetsuit during the summer, try ditching it, even if just for a bit (you might actually like it, just maybe). Go as long into the cold season as you can swimming ‘skins’, that is, without any neoprene at all;

  • As soon as I started to notice any physiological or psychological impacts (i.e. chilling or slight numbing of extremities, decrease in amount of time I can comfortably swim, fear or anxiety about cold, etc), I sat myself down, turned inward, and had a good chat;

    • What exactly happened, what impact did the cold have on me? 

    • What are the possible consequences based on what happened, what are the risks to me? Could they be permanent, or am I likely to recuperate within a few hours/days/weeks? Note: careful on how you assess this, take advice first from experts on cold swimming, or a medical doctor or nurse.

    • Should I continue with another swim to see if it happens again?

    • Can I find a way to minimize or mitigate the risk? 

    • Am I willing to accept the consequences, if all else fails?

 

I can’t answer any of these questions for you, every swimmer must decide on their own where their threshold for risk and consequence lies. As I was writing this, a weirdly numb pea-sized spot on my thumb was still working it’s way bad to normal (not really numb, not really pain, just felt ‘weird’), three weeks after an extremely cold swim. I knew this was a possibility going in, as it’s happened before with other similarly cold swims, so I’ve now added the extra step of having my hands dried and covered immediately upon exit from water to help limit nerve damage. With each cold swim my hands are better adapted, but there was always that risk. It’s up to you, of course, only you can decide what level of risk you’re willing to take. The point is this: if you answer ‘no’ to that last question, no risk for you, but you still want to keep swimming in cold a bit longer past the summer season, consider using neoprene if it will assist you in doing so safely. 

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Let’s be very clear – neoprene will help keep your extremities warm, a swim cap in particular will help retain some body heat. But if you are experiencing irregular heart rhythm, difficulties with blood pressure, disorientation, nausea and so forth, or have underlying health issues, diagnosed or otherwise, these symptoms and their consequences will most likely not be mitigated with the use of neoprene. See a doctor, get advice. Simply put, swimming past your threshold for cold might not be for you. No shame in that either, everyone is different.

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So if you aren’t keen on risk, are looking to stay in longer than you normally would, or just want to keep your fingies and tippy-toes warm and well protected, here’s a few options:

What is an IISA ratified ice mile, exactly?

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From the IISA rule book:

The spirit of the Ice Mile was never created for competition purposes but as an individual challenge with the spirit of extreme adventure. Ice Miles can be attempted in any Icy place on earth as long as it adheres in full to IISA Rules. Extreme challenges always come with extreme planning, training and safety. IISA Swimming and Safety Rules are there to set the minimum requirements for an Ice Mile in safe, assessable and hazard free location. It is with the Swimmer and his or her safety and logistics team to increase and improve on the safety requirements as location and conditions extends to the extreme.

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Rules of the swim:

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Here's a basic run-down of some of the IISA's parameters for ratification, but always consult the rule book for more details and the most up-to-date rules and information:

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  • ECG must be done within 6 months of the swim, along with a medical assessment done by a medical doctor;
  • An Observer and Witness to the swim are required, as well as medical support if emergency services are far from venue (new rule);
  • A qualifying swim done beforehand is required;
  • Official distance = 1 British mile (16.09km)
  • Water temperature must be 5.0 (five with one decimals) degrees Celsius (“C”) or below or 41.0 degrees Fahrenheit (“F”), measured as follows: 

    • ​For a continuous period of at least 5 (five) minutes, at a depth of between 5 (five) to 20 (twenty) inches below the water surface;

    • Temperature must be established by using the average reading obtained from 3 (three) digital thermometer readings with a temperature accuracy of +/-1.0C (at least one decimal display);

    • To be valid for the purposes of an Ice Swim, all three thermometers must register 5.0C or below;

    • The thermometers must be water submerged thermometers or utilise a probe; no laser or infra-red thermometers are allowed;

    • The official water temperature must be measured no more than 30 minutes before the Swim begins;

    • If water temperature is close to or at 5.0C, the Observer is required to take several measurements across the course and during the Swim to ensure average water temperatures remain at 5.0C or less for the duration of the Swim;

    • Use of watches, or watch-type devices, for distance and temperature measurement are not allowed.

  • Only standard swim items can be worn - bathing suit no lower than knees, 1 swim cap latex or silicon, approved goggles, earplugs, swim float or safety belt, lubrication for chafing, but NO neoprene, NO MP3 players, NO heat sources.

  • There are also specific video and photographic requirements for documenting the swim.

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Training for the mile

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Training for the swim is everything, you may think you can muscle through it or wish and will yourself to the finish, but in water that cold, it's a really risky approach. Chances are, you won't actually succeed anyhow if you aren't physically and mentally prepared. Sorry, but I need to be blunt and firm on this point - don't be an idiot. It's not worth it. Train, train, train.

 

I started with the following general rule of thumb: know what you're getting into before you attempt it. I think it's a pretty risk thing to attempt an ice mile in your first season of cold water swimming. If you've never even been in sub 5C water before ever, and have no idea how it will affect your body during or after the swim, a mile is probably not the place to try it out. I had my eye on an ice mile for some time, mulling it over in the back of my head for years before I was really ready for it. Everyone is different, and it depends on your availability and dedication to training, but understand that it's a huge risk to your well being to attempt this swim without knowing what it means to spend time in water that cold.

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There were 4 things I did to train for my first season of ice miles, which I will continue to use, and I think they helped me both succeed in finishing but more importantly, stay safe both during and after the swim:

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  • I used the IISA's qualifying time/distance chart as a basis for my training plan, but I also reached above it. So as an example, at water temp between 10-11C, the minimum distance for a qualifying swim is 3,500m. I did more than that, 4,000m+. I actually started this approach as soon as the water started cooling in the fall, and swam as long as I possibly could each time I got in the water. As a result, I was acclimating above IISA requirements if my swims had been qualifying swims. By the time I got down to sub 5C water, it was just another swim in a series of long training swims, and I had exposed myself as much as possible while riding the temperature down.

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