Ancient beauty and wellness practices often make a comeback, only to be termed as bizarre! One such traditional practice is Dao Liao or the knife massage. The therapy dates back to China 2000 years ago. It involves using knives to massage sore muscles and treat skin disorders. The blades enhance blood circulation, while the chopping motions make the parts of the body more relaxed. The special blades are dull in comparison to others and a cloth separates the blade from your body.