Self torturization.... or something

I learned about these things from a massage master.  It's what she used on herself, to reach those knotted muscles in her own back.

In use, one can usually find a good point on this thing to apply to muscles in need of pressure.  Muscle release happens after 20 or 30 seconds of fairly strong pushing.  The shape allows reaching all over ones own back, shoulders, neck, legs, etc.  The curve gives you something to apply force to, and transfer force to said muscles.  It looks like this in use:

(image from A-zon)

 Those longer straight bits with the knobs.... yeah, I know.  Turns out they are handles to pull on.   Bet you thought something different..... and that's why we are friends... lol.