The average adult stands 0.4 inch taller in the morning than in the evening because the cartilage in the spine compresses during the day.
The hyoid bone, in your throat, is the only bone in the body not attached to another bone.
Every square inch of the human body has an average of 32 million bacteria on it.
If you stop getting thirsty, you need to drink more water. For when a human body is dehydrated, its thirst mechanism shuts off.
As we get older the brain loses almost one gram per year because its nerve cells die and cannot be replaced.
Kissing releases the same neurotransmitters as intense exercise, like parachuting or distance running. The heart beats faster and breathing becomes deep and irregular.
The most sensitive parts of the body are the fingers and lips whilst the least sensitive part is the middle of the back.
There are between 100,000 and 150,000 hair follicles on our head. Each follicle can produce about 20 hair in a lifetime.
Spiders' webs are a traditional natural clotting agent, when applied to a cut they quickly stop the flow of blood.
A black eye, in medical terminology, is called "Bilateral periorbital hematoma".
