With summer around the corner, diving into a cool pool will become all the more tempting. Why not put your time in the water to good use? Swimming is an excellent form of cardiovascular exercise, since it utilises all the major muscle groups of the arms, trunk and legs.

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Aim to swim in the most horizontal position you can maintain, in other words, your shoulders, hips and legs must be as near to the surface as possible – this is the most aerodynamic position; try to look at the bottom of the pool, so that your head is down in the water, and then lean forward with your chest; use long fast kicks and make sure that your legs are moving up and down; when your arm comes over, stretch it forward as far as it will go, and slice it into the water thumb first. Try to minimise the size of the splash.

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