Your body’s natural circadian rhythms influence not only sleep but also hormone levels and metabolism.

The human brain is capable of generating approximately 20 watts of electrical power while awake.

Your body’s muscles can use up to 90% of the available oxygen during intense exercise.

The human body can produce its own vitamin K through the gut microbiota.

Your body’s bones are constantly being broken down and rebuilt through a process called remodeling.

The human body’s lungs have a total surface area of about 70 square meters for gas exchange.

Your body’s digestive system can process food in about 6 to 8 hours from ingestion to elimination.

The average human adult has around 5 million hair follicles distributed across the body.

The human body has more than 300 joints, which allow for movement and flexibility.

Your body has a built-in circadian rhythm that regulates sleep and wakefulness.