en_captions: A young man does warm up exercises before playing a solo game of tennis in a gym room using the wall as an opponent before finally collapsing on the gym floor in exhaustion and then rising again.   A young man sits on a hardwood floor of a gym room and does warm up exercises including toe touches.   The man then gets up and does standing warm up exercises including stretching and bending at the knees.   the man then begins to play solo tennis using the wall as an opponent and hitting the ball with the racket against the wall back and forth.   The man then collapses on the floor in exhaustion as the ball bounces around on the floor before he gets up again.