Why does the water in the pool feel so cold at first, but after a while, it’s room temperature or even warm?

Question

I’ve been a competitive swimmer for almost 4 years and I still don’t know why this happens.

In: Other

Answer 1

On the initial cold-shock the capillary blood vessels contract and reduce the blood flow from your extremities to your body core so that less of the blood that has been cooled by skin contact with the cold water gets to your vital organs.