I don't wear a wetsuit; it gives the ocean a sporting chance.
This thread is somewhat old so I thought I would revive it. Does anyone have any advice on swimming in cold water while pregnant? I live in San Diego and would only swim until the water is around 58-59, so I'm not talking extreme temps. Is moderately cold water ok for the baby?
I'm looking at my 7 month old who trained right through with me during my pregnancy. Seems that all the research and warnings are more about heat than cold. Due to circumstances beyond my control, I did not train in cold water during pregnancy(only into the 60's F). I read the research by D. Clapp and felt confident based on that to continue to train hard. I found that the big differences were that I needed to take glycogen very seriously, in terms of depletion, so I was careful about feeds during long swims and definitely eating soon after even shorter stuff. I was more sensitive to swimming in warm water, actually. I also noticed some heart rate differences and adjusted for that--mostly I could not truly do an anaeobic "sprint"--it was as if my body said NO.
My sense from my experience and what I researched is to do what you do, eat carefully for energy, nap to make up for it, and continue with whatever you usually do for cold water training and listen to your body.