One ball per player.
Players must place the ball above their brow on their foreheads and try to balance it there for as long as possible.
Players must keep their eyes open and mouth closed.
You can play last man standing where the winner is the person who can balance the ball for the longest.
"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.