| 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". |