Back to Chi is a storefront, new-age health-related business in Alexandria's Del Ray section that, among other things, offers free trial massages on jade-roller beds made by a manufacturer called Ceragem. I had a friend who swore by these massages and got me to go with her one day. The place itself is very pleasant. Massages are offered regularly throughout the day, and while one group is receiving massages, the next group hears a lecture explaining the science and medicine of how the beds work. I could not relay the details to you, but I will say that I felt incredible for 24 hours after my massage. The visit itself was somewhat painful to me - but I have a bad back and that could be why. I also was told that some people experience pain on their first visit or so, until they get used to the feeling. While I was here, and waiting for my massage, someone sat me under some special light (infrared? Does that make sense?) for about 10 minutes and -- this really happened -- I felt the deep, deep level of relaxation I've felt only a handful of other times in my life...one was after experiencing a Native American sweat lodge in upstate New York. Another was after having a Reiki massage. That was just from the light. Go visit Back to Chi. They seem to have a wealth of knowledge about alternative health issues.