With a partner players stand side by side.
One partner rolls the ball for the other to run out, past it by 2-3 metres, before turning to face the ball, lay face down and lets the ball hit the top of their head.
They then pick up the ball run back and repeat.
Important! When laying down be aware not to bang nose on the floor.
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.