Parts of this look relaxing. A form of chiropractics just using some scary looking mallets. I’m not sure what the knife would be good for unless someone looks like they aren’t going to tip well.
“I ran across this video on Reddit and at first it looks like this woman has entered a torture chamber. After the camera zooms in on an assortment of mallets and a huge blade, the woman lies down on a table to get pounded with said mallets and blade, as well as a hammer, sticks, and some kind of vice.
She unfortunately gives us no details on her YouTube page, and in her title calls the whole experience a "Chinese knife massage." But when I googled "massage with mallets," some sites about "tok sen" came up – a massage from northern Thailand that uses mallets. Athough she looks (and sounds) scared and sometimes in a little pain, I have to say, it looks really relaxing to me!”
Video at Boing-Boing.com