Benefits of exposure to extreme cold — voluntarily — 'very l
A researcher says evidence is "very, very limited" when it comes to the benefits and safety of cryotherapy.

The practice of exposing people to extreme cold temperatures for short periods of time dates back to the ancient Greeks.

It is not a new concept but has become popular in recent years, with cryotherapy clinics opening up across the world. Claims have been made by manufacturers of cryogenic tools and the clinics that use them that the practice could help treat things such as muscle soreness, rheumatoid arthritis and even aging and wrinkles....