I won't get scientific as to what this product actually does, because I don't even know what makes it work. Something to do with the Epsom salt, I guess...
I have been using this for the last month or so, and have noticed that I fall asleep easier than I did before using it. I also feel well rested and ready to go when I wake up the next day. I think it helps me recover from my workouts too.
Give it a try and let me know how you like it! (Make sure to get this exact bottle, I think they have different kinds).
Dr. Teal's Body Wash