HOW: In a sidelying position place a foam roller just underneath your armpit region. You have the option of rolling up and down, from side to side, or performing a pin and stretch. Work around this area and see what feels good for you. Focus on your breathe as you perform these mobilizations.
FEEL: It is common for the soft tissue in this area to be sensitive. There are many nerves that run around this region, do NOT continue if you feel numbness and tingling. Take a quick break until that sensation diminishes.