Why to Buy: TriggerPoint Core 18' Foam Roller

[morrisboris]

So, trigger point claims that the ridged areas of their foam roller acts like a massage therapists thumb, fingers, and palm. The million dollar question is, how does an inanimate object know which part of your body requires which part of the therapists hand? And how does it know it's on the right area of your body to be using that hand part?