Four men are critically ill after falling from a ship into the water during an exercise drill at the Royal Portbury Dock near Bristol.
Regional development minister Danny Kennedy answered a number of questions relating to water supply, including Exercise Watermill, a mock incident exercise held in October 2011 to stress test Northern Ireland Water's response capacity.
They'll install more places to sleep, another bathroom, a better water system, more exercise equipment and a bigger refrigerator.
The accident happened at about 1600 GMT on Monday when the man and three others fell into the water during an emergency exercise drill.
Be sure also to drink enough water as you increase your exercise.
By itself, coconut water is not ideal for prolonged or endurance exercise, without additional carbohydrate or electrolyte supplementation.
Down the hall lies even rarer offering: a exercise pool, which acts as a water-powered treadmill.
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While sports drinks, plain water or coconut water will all keep you hydrated, when you exercise three hours or longer in the heat or adverse conditions, your body requires higher levels of simple carbohydrates and electrolytes not adequately found in coconut water.
The bottom line is that most people who lightly exercise do not need sports drinks or even coconut water- plain water is just fine.
Water or sports drinks, however, are also useful as well for recreational exercise.
Other studies have shown that drinking coconut water with added sodium is as good as a typical sports drink for re-hydration after exercise.
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