The average person's skin weighs twice as much as their brain.
131
By weight, Bone is five times stronger than steel.
417
A hummingbird weighs less than a penny.
1k
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.
5
The 1 yen coin can be used as a weight, because it weighs exactly one gram. Also, it can float on water.
19
The cat brain weighs about 30g.
167
Sex burns about 360 calories per hour.
860
Most elephants weigh less than a blue whale's tongue.
442