Cryotherapy is an intense form of cold therapy, a procedure I knew very little about. My limited knowledge of it was that professional athletes use it to ease pain and muscle stiffness, much the same way ice would be applied to an injury to help reduce swelling and improve blood flow.
Cryotherapy is a whole-body treatment. Rather than applying an icepack or sitting in a tub of ice or freezing water (unthinkable!), you stand in a chamber (from which your head peeks out) that gets its very cold temperature from compressed gas (nitrous oxide) stored under high pressure.
Some other reported benefits of cryotherapy include: better sleep; faster metabolism (which can fuel weight loss); relief from anxiety, depression, fatigue, jet lag and migraines; and improved skin tone and energy.