Teen boy stands on chair and does pull ups on bar in doorway, he falls down. Exercise.
Young boy runs on treadmill. As it speeds up, he trips and falls off. Exercise.
Small brown dog attacks woman's feet under a blanket. She accidentally flips the dog off the bed and out of frame.
In a parking lot a man throws a football at a tot boy wearing oversized football pads. Ball hits boy on the head (helmet), boy falls down onto pavement.
Tot boy tells mom he's going to hit a golf ball off her head. Mom is filming. Boy hits the ball & it hits mom in the arm.