WebMD gives you the 411 on Epsom salt -- it's been used for hundreds of years to ease all kinds of aches and pains. A simple soak with it in the tub may help you feel better. read more
Epsom salts are high in magnesium, a key component to healthy muscle movement. Magnesium is one of the "electrolytes" that is advertized in sports drinks and such, and it is an essential mineral (metal) for movement of muscle fibres. read more