WHAT'S INSIDE: HUMAN BODY

The human body is an amazing structure made up of many fascinating parts and systems. Learn about the human body and how its systems work together.
  • Body Parts
  • Body Systems

FEATURED: HUMAN BODY

How much do you know about the human body?

FPO

When it comes to your body, how much do you know? Test your knowledge with this quiz adapted from "YOU: The Owner's Manual", by Dr. Mehmet Oz and Dr. Michael Roizen.

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Every guy is self-conscious about something, and hours are often spent wondering how he measures up to the competition. But what would-be body flaws are the most embarrassing?

Heart Videos

The heart muscle is required to keep a steady beat. Learn all about the heart and how it functions in these videos on HowStuffWorks.

HEALTH: HUMAN BODY

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