| Brain damage occurs at an internal temperature of 105 degrees Fahrenheit |
| The sound you hear when you crack your knuckles is actually the sound of nitrogen gas bubbles bursting |
| Hair is the fastest growing tissue in the body, second only to bone marrow |
| Human hair and fingernails continue to grow after death |
| The only part of the body that has no blood supply is the cornea in the eye. It takes in oxygen directly from the air |
| An average person perspires a gut-wrenching 278 gallons of sweat each year |
| The human spinal cord is 45 cm long in men and 43 cm long in women |
| The liquid inside young coconuts can be used as substitute for blood plasma |
| The lifespan of a taste bud is ten days |
| Babies are born without knee caps. They don’t appear until the child reaches 2-6 years of age |