Players work in pairs with two balls between them. One player underhand throws the ball upwards, while the other spikes the ball towards their teammate who has to dig the ball back before catching the ball that they threw in the air.
The digging player should not look at the thrown ball until they have digged the other ball.
"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.