Your body is constantly producing new cells to replace old or damaged ones.

"All growth depends upon activity. There is no development physically or intellectually without effort, and effort means work." —Calvin Coolidge

Each kidney has about 1 million nephrons that filter blood.

"Work harder than you think you did yesterday." —Alex Elle

The human body’s bones contain about 99% of the body’s calcium.

"The future depends on what you do today." —Mahatma Gandhi

The human body can produce around 2 liters of tears per day.

Your body has around 100,000 miles of blood vessels.

The human body’s sensory systems, including sight, hearing, touch, taste, and smell, provide critical information about the environment.

"Developing a good work ethic is key. Apply yourself at whatever you do, whether you're a janitor or taking your first summer job, because that work ethic will be reflected in everything you do in life." —Tyler Perry