Could heading deep into the desert and burying yourself neck-deep in hot sand really be good for those aching muscles and joints? UAE environmentalist and social campaigner Sheikh Abdul Aziz Al Nuaimi, better known to his almost 60,000 followers as the Green Sheikh, sure thinks so. A few years ago he introduced American educator and author Stephen Ritz to the experience of being buried up to his neck in sand. The somewhat forgotten tradition of sand...