You burn 26 calories in a one minute kiss.
605
A hummingbird weighs less than a penny.
1k
Sex burns about 360 calories per hour.
860
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 elephant brain weighs about 6,000g.
274
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.
62
One human hair can support 3 ounces.
191
The adult human brain weighs about 3 pounds (1,300-1,400 g).
99