The heart is the body's hardest-working muscle. Whether you're awake or asleep, or exercising or resting, your heart is ...

In a scientific “first,” a tiny heart structure composed of human cells has been successfully grown within a pig embryo.

Other strong muscles include the tongue, heart, uterine muscles, external eye muscles, and Soleus (a muscle found just below the calf). What is the largest bone in the human body?

Microplastics, which are less than 5 millimeters wide — or about the size of a pencil eraser —can enter the human body through the mouth, nose and other body cavities.

Find out how your heart pumps oxygen-rich blood throughout your body and oxygen-poor blood to your lungs, without ever stopping to rest.

Lungs are among the heaviest organs in the human body. The right lung typically weighs about 1.4 pounds (0.6 kg), while the left lung is slightly smaller and weighs approximately 1.25 pounds (0.56 ...

The head-heart-body connection affects everything from our physical health to our mental and emotional well-being. When our three brains are working in harmony, we experience better physical and ...