Lower Trapezius take your tennis ball and roll it down the edge of your shoulder blade, roll across the band, using circular motions or just hold the pressure - Exercise How-to -
How to use a massage ball - The Physio Company
Lacrosse Ball Massage: How to Perform
Improve Your Posture with 6 Easy Exercises! — fitness is medicine
Lower Trapezius take your tennis ball and roll it down the edge of your shoulder blade, roll across the band, using circular motions or just hold the pressure - Exercise How-to -