Breathing
Regular and controlled turning of the head to either side. Ensure quick intake of breath and blow strongly into the water as the face returns to its central position.
"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.