Assertion: tennis ball's pressure | /r/HasProperty | the floor
Facets:
value: usually
type: DEGREE
Source sentences:
text: The basic idea of tennis ball massage, or any massage with any kind of ball, is to apply specific pressure to a stiff or aching spot in a muscle by trapping it between your body and something else: usually the floor, sometimes a wall, or another body part (or a few other creative options like the back of the couch, the bottom of the bathtub, and so on).