One feeder throws the ball up for the other player to try and head, back between the feeder's legs.
The feeder needs to stand with their feet apart and react quickly to the return header.
The heading player should keep their feet moving, being ready at all times to head the ball back with power.
"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.
As we enter the business end of the competition, we take a look at the remaining eight teams and the key talking points surrounding each side.