From moms to athletes, more and more people are discovering the benefits of cryotherapy.

You step in the sub-zero chamber for three minutes wearing nothing but gloves and socks, and users say their joint pain and muscle soreness are gone.

Former Longhorn Trey Hardee has gotten in on the craze. The silver medalist decathlete has made it a regular part of his training.

Cryotherapy is not regulated and doctors caution it can cause frostbite since the temperature inside the chamber can reach 300 degrees below zero.

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