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Drink plain ice water
Drink plain ice water
ISTOCK

Not only does water have zero kilojoules, but when it’s very cold, you actually burn kilojoules warming and absorbing it.

Once you finish burning those kilojoules, your metabolic rate remains 30 percent higher than before you quaffed the liquid for another 90 minutes!

So keep yourself hydrated by leaving a glass of ice water next to you all day, and continually sipping from it.