Players work in pairs and stand across the court from each other. One player starts with the ball and overhand passes the ball high in the air to their teammate.
The teammate then overhead passes the ball in the air continuously while the teammate accelerates, runs around the other player and returns to their starting position to receive the ball back, where the teammate will now do the same thing.
The drill makes players run fast, while their teammate has to be aware of the other player running to know when to pass the ball back.
World Rugby has reportedly conceded Aaron Smith's disallowed try in the World Cup final should have stood.
"It is not only useful for staff who are experienced but a valuable tool for those subject staff who have to take teams."
The variety of sessions across sports - sometimes we steal session ideas from one sport and use them with another.