This exercise aims to work on synergy and motor control of the pelvic floor muscles, in a moment of isometric strength performed with the upper limb, and being in a situation of instability with the foam roller. We can consider it as an advanced exercise, which requires good motor control of the pelvic floor muscles, together with dual work involving the lower and upper limb. It could work without instability if the patient does not perform it properly, thus lowering the level of difficulty.