I've never seen any Eastern literature providing anything more than anecdotal evidence for use of epsom salt baths for performance enhancement but there is considerable literature from the former Soviet Bloc and East Germany that swears up and down to its effectiveness. In addition to the benefits you mentioned the high magnesium content in epsom salt baths is purported to facilitate removal of toxins through the skin and in so doing alleviate stress and tension.
ELITETRACK Founder