Your body’s respiratory system includes the nose, throat, trachea, bronchi, and lungs, which work together to provide oxygen.

The human body’s skin is capable of producing vitamin D when exposed to sunlight.

Your body’s digestive system includes the mouth, esophagus, stomach, intestines, and other organs that aid in digestion.

The human body can produce its own natural painkillers called endorphins, which help reduce pain and improve mood.

Your body’s bones are a major source of calcium, which is essential for maintaining bone density.

The human body is capable of adjusting its internal temperature through sweating and shivering.

Your body’s sweat glands are more concentrated on your palms and soles than on other parts of your body.

The human body’s sense of balance is regulated by the inner ear, specifically the vestibular system.

Your body’s muscles are composed of about 75% water, which is essential for their function.

The human body has about 20 muscles involved in the movement of the eyes.