Drink too much water in as little a time as 10-15 minutes (when you don't need to) and the only thing that would happen is you'd end up with lethargy. In other word you'll be tired due to flushing out your sodium. Either add some sea salt to the water or slow down your consumpotion of it. The 8 glasses of water a day is a myth that began long time ago birch!
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Fadi.