Posts by Askell
Positive buoyancy is useful in a swimming wetsuit as it reduces drag by lifting the swimmer in the water. Less swimmer in the water, less drag to overcome, so the swimmer can be faster for the same...
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5°C (41°F) is very cold water for unacclimatised swimmers, especially if you're used to swimming in 18°C (64°F). You could probably manage a short dip (1 or 2 mins), but I would not plan for longer...
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