The 1 yen coin can be used as a weight, because it weighs exactly one gram. Also, it can float on water.
19
The elephant brain weighs about 6,000g.
274
You burn more calories sleeping than you do watching television.
348
You burn 26 calories in a one minute kiss.
605
By weight, Bone is five times stronger than steel.
417
A hummingbird weighs less than a penny.
1k
Sex burns about 360 calories per hour.
861
A million dollars weighs about a metric ton. Hence the expression "a ton of money."
66