1. The human body is composed of approximately 60% water.
2. The brain is the most complex and least understood organ in the human body.
3. The human body has over 600 muscles.
4. The heart beats approximately 100,000 times per day.
5. The lungs are the only organs in the body that can float on water.
6. The human body has over 200 bones.
7. The skin is the largest organ in the body, weighing approximately 6 pounds.
8. The human body has five senses: sight, hearing, touch, taste, and smell.
9. The liver is the only organ in the body that can regenerate itself.
10. The human body has approximately 100,000 miles of blood vessels.
11. The human body has over 100 trillion cells.
12. The human body produces about 25 million new cells every second.
13. The human body has approximately 20 square feet of skin.
14. The human body has the ability to heal itself, such as when a bone is broken, it can
regenerate and heal on its own.
15. The human body has an internal body clock, known as the circadian rhythm, which
regulates sleep and wake cycles.