Unlock the power of the mammalian dive reflex by starting your cold plunge with a full head dunk.

Mammalian dive reflexes. Some research asserts that the way that mammals dive in the water, whales and dolphins, is as they go down, the water gets colder, faster. So as the cold water brushes over their face, it switches them from a sympathetic to a parasympathetic state. So from a state of fight or flight into a state of rest and digest. If you're an avid cold plunger, I want you to try getting into the cold plunge and dunking first. Most people dunk their head last. Dunk right out of the gate and tell me if it doesn't change your cold plunge experience. It immediately calms your heart rate down and just makes you feel at peace in the cold water. So the first thing I do is I get in, I sit all the way down and I go under, stay under for about 10 or 15 seconds, then pop back up. That activates that mammalian dive reflex and you get the advantage of having a parasympathetic response.