The 1 yen coin can be used as a weight, because it weighs exactly one gram. Also, it can float on water.
A neutron star (what remains after a Super Nova) is so dense that a portion of it the size of a sugar cube would weigh as much as all of humanity, or more than all the cars in the United States.
Dolly Dimples, a 555 lbs. woman, lost 443 lbs in one year by eating nothing but baby food.
A million dollars weighs about a metric ton. Hence the expression "a ton of money."
There are times when you're walking that the pressure on your feet exceeds your body weight, and when you're running, it can be three or four times your weight.
By weight, Bone is five times stronger than steel.
Fidgeting can burn about 350 calories a day.