This high-tech take on icing down injuries is intriguing. After stripping down to underwear, clients stand in a chamber while a liquid nitrogen mist cools the body to sub-zero temperatures (between -130°C and -140°C) for up to three minutes. Post-session, body temperature rapidly readjusts, and a fresh supply of oxygenated blood floods back into the skin and muscle tissues. Benefits – asserted for now – include reduced joint pain, inflammation and recovery time, and a spike in endorphins, collagen production and metabolism. To state the obvious, it’s really cold, but the session is over before you can think about it too much. Athletes, dedicated exercisers or those undergoing specific medical treatments stand to benefit the most from cryotherapy, but for the everywoman, it can soothe muscles and will definitely put pep in your step.