A million dollars weighs about a metric ton. Hence the expression "a ton of money."
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The earth is approx. 6,588,000,000,000,000,000 tons.
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Sex burns about 360 calories per hour.
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Dieters who sleep more take off more fat that those who sleep less.
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Fidgeting can burn about 350 calories a day.
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The 1 yen coin can be used as a weight, because it weighs exactly one gram. Also, it can float on water.
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A hummingbird weighs less than a penny.
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The adult human brain weighs about 3 pounds (1,300-1,400 g).
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