Cold plunge: Why dunking yourself in icy water can benefit your health

Would you ever plunge yourself into a chilly ice bath for up to two minutes? The practice isn't new, as people have been dunking themselves into cold water as far back as 3500 BC, according to the U.S. National Institutes of Health. Adding heat into a cold plunge cycle is known as contrast therapy, which is often done by sitting in a sauna. As Alexia Kapralos explains, people partake in the practice for the physical and mental health benefits.