When you stand in hot water, why is it cooler if you stay still?

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When you stand in hot water, why is it cooler if you stay still?

In: Physics
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If you stand still you cool the water directly around you. Once you move you exchange that layer of cooler water for new hot water. Same effect as moving air cooling better than still air.

The rate of energy transfer is also related to the rate of flow at the conducting surface. Just as you could increase the flow on a pump to a radiator to increase thermal transfer, physically moving through the water increase the flow across your skin. What we perceive as temperature is not actually an absolute temperature, but rather the flow of energy in our out of our skin.