Part of this is conditioning: growing up in an urban environment, the pools were often humid, musty places in the basements of even my local prestigious private schools.
The other reason is more emotionally charged. What if this happens?
Finally, swimming makes you fat. The very act of it keeps limbs soft and pudgy, not lean and well-defined. A University of Florida study found that swimmers have a harder time losing weight than runners.
A recent report goes one step further. Runners have different cravings than swimmers. Runners, say the scientists, actually crave light, watery foods like fruit and have suppressed the hunger hormone, called ghrelin. Meanwhile, swimming, even in cold water, increases this nasty little hormone , plus drives a hankering for more fatty, rich, processed carbs like bread or biscuits.