Benefits of rolling out your muscles: loosed joints/muscles, increase circulation.
How to roll out each body part:
(0:30) Shins (front, lower leg).
(1:55) Full body w/ long roller.
(2:50) Upper & lower back.
(4:20) Quadriceps (Front upper legs).
(6:15) When you use a roller.
(7:30) IT Band (side upper legs).
This prevents injury, then muscles can improve strength while maintaining flexibility.
Changing Your Health from the Inside Out.