That folk remedy is mentioned any time someone asks about DOMS. I doubt enough magnesium can cross the almost-waterproof skin layer, and then migrate through the fat and fascia layers, to have an effect on muscles - assuming magnesium does in fact help DOMS, which is questionable. I suspect it's the warm water that helps…
"detox" "jump-start metabolism" "white food" "eat clean" "tone" "recomp" "Dr. Oz said.." What else..? B)