Learn what happens to the body as you foam roll.
The take-home message is that no physical changes take place.
There is only a temporary change due to:
1: Neuro-modulation: the change of your pain threshold
2: Increase blood flow: this helps you to feel more warm and loose (in the body part you work on)
3: Thixotropicity: this refers to the changes in viscosity of your muscles which are enclosed within a sheath (fascia) filled with blood and fluid.
All in all, a great way to answer people who ask you: "What happens when you get on that roller?"