Brown fat vs. white fat

I’ve been doing a bit of reading on some new research papers on body fat (adipose tissue). Most (almost all) of the fat in our bodies is white fat. Fat stores energy and acts as an insulator. White fat specifically, which could be up to 25% of body weight, does not generate heat. Until last…

Women, Men and Cold…

So most of us have noticed a difference between how men and women react to cold, and even that we feel cold at different temperatures, and most noticeably that women will generally feel cold before men. (I’m guessing most men think a duvet with different togs per side is a good idea.) Well, there are…

Back again to the same old subject of Cold

Cold Water: Prepare- I often put on my togs before leaving the house. (Saves me a minute or two of cooling down before getting in the water). Most important on windy days. I stay warm as long as possible. Uncomfortably warm is good! Monitor- How do you feel in the water? How are your fingers/feet?…

How To: Prepare for Cold Water Swimming

I’ve touched on part of this before, but thought I’d expand it. Check the Weather forecast. No point getting there and finding out conditions are too bad. Obvious? Yes. Learn from the forecast though to extrapolate to your local spot conditions if you are not close enough to see it. If you are still learning…

Long Duration Exposure Effects of Cold Water

This is quite simple but if you really understand it, it explains a lot of other things. We’ve briefly covered the various stages of hypothermia. For regular cold water swimming, the important thing here is that as temperature decreases blood-flow changes. Blood circulation from the extremities to the core decreases, in order to protect the…

La Jolla Bay and a hypothermia tale

I’ve surfed in San Diego and swam in La Jolla Bay, in San Diego, a couple of times, last time in middle 2008. La Jolla particularly was a great swimming experience for a cold water swimmer like. On friday nights all the local triathletes, including some the of the world’s top professionals, swim from La…

My hypothermia experience…

In 2008 I did the first* Blackrock to Cobh 8 mile (tide-assisted) in October without a wetsuit that took me 3 hours in 12 to 12.5 Deg Celsius. I had already done a couple of similar or longer distance swims but not at this temperature continuously. (I had done Clew Bay at 12 miles and…