Performing the: A Step-by-Step Tutorial Roll Ball Psoas - Abdominal Region
Place a small exercise ball (around 6 to 8 inches in diameter) under your lower back, positioning it near the psoas muscle, which is located roughly halfway between your belly button and hip bone.
With your hands behind your head or crossed over your chest, slowly lift your head and shoulders off the ground, engaging your abdominal muscles.
Roll gently back and forth over the ball, allowing it to massage the psoas and surrounding abdominal area.
Continue this exercise for about 5 to 10 minutes, or until you feel your muscles have been adequately worked and massaged.