Teen boy does a flip off of 2nd teen boy's back and falls to the ground when he tries to land on a mattress.
Girls do back flips on a small mattress indoors, practicing gymnastics. One girl tries a front flip and the blanket underneath her gets whipped over her face. The woman behind the camera laughs.
Older teen boy dives into free standing pool, second dive, he hits the side of the pool and camera loses focus. No recovery.
A boy leaps over his little sister to dunk a basketball into a basket in his room. He makes the shot but bumps into his sister's head on the way, knocking them both to the ground.
A teenage girl and a younger girl begin a tumbling routine in a gym and the teenage girl lands on a little boy who runs into frame just as she is about to land a back flip. All action happens in first 6 seconds of clip.