The heart is the body's hardest-working muscle. Whether you're awake or asleep, or exercising or resting, your heart is always at work. It pumps blood through arteries to deliver oxygen to organs and ...

Learn all about the human body's many systems and some of its individual organs, both vital and vestigial.

The human body is a walking wonder—packed with secret features, bizarre abilities, and mind-blowing facts that most people have never even heard of.From strange built-in defenses to mysterious inner ...

Your body has over 70 different organs. Here's what you should know about your body's internal makeup.

Physicians must not only study the human body, but live in it.

Which of the body's organs weigh the most? The answer may surprise you.

The human body is a disgusting, terrifying mass in practice. Sure, they look good painted and propped up just right for fashion shoots and underwear ads, but most of us with a mirror know that’s ...

Do we really lose the most body heat through our heads? How many senses do we really have? Let's explain a few myths about the human body.

What we know about the Smithsonian’s human remains Brains and other body parts, mostly from people of color, were taken without consent. As The Washington Post investigated, the museum took action.

The human body is an astounding and sophisticated machine. Did you know that our bodies contain 100,000 miles of blood vessels and almost 40 trillion microbial cells? Or that the size of a baby’s eyes ...

Over the past few decades, evidence has been mounting that the average human body temperature is not really 98.6 degrees Fahrenheit. Instead, most people’s baseline is a little bit cooler.