Swim one full stroke cycle over the water diving underwater to kick three dolphin kicks before resuming one full stroke on the surface. You must drop your head down underwater to allow your hips to lift, you are then able to kick underwater. This will develop the undulation of butterfly and a good hypoxic drill for improving your lung capacity.
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Save yourself a scare this Halloween and ensure your session runs smoothly. No chaos, no fright, just structure.
As the Lions tour approaches with their first tour game this Friday against Argentina, we look ahead at what the fans can expect to see from both sides as the tour in Australia approaches...