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National Body Challenge 2008: Compound Strength

Related Article: Learn more about fitness.

Gilad combines movements for optimal fitness.

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National Body Challenge 2008: Age and Exercise (2:24)

Dr. Pam Peeke offers tips and advice on starting an exercise program no matter how old you are.

Exercise Might Help Prevent Skin Tumors (1:26)

Watch this video showing that exercise might prevent skin tumors on HowStuffWorks. Hairless rats who were exposed to more exercise experienced fewer skin tumors due to UV rays. Learn why scientists believe that exercise might prevent skin tumors in... More »

Hamstring & Glute Exercises with Shaman DeArco (1:53)

Professional Fitness Trainer Shaman DeArco demonstrates basic exerices and provides tips for National Body Challenge participants.

Get a Hollywood Body (5:12)

Watch this video about the Red Carpet training workouts on HowStuffWorks. Actors spend weeks before the Academy Awards prepping for the big day - whether it's dieting, working out or consulting a specialist, celebrities rely on many ways to achieve... More »

Dancing Like the Stars (2:30)

With the popularity of musicals like "Chicago" and "Grease" on the big screen, as well as TV dance shows like "Dancing with the Stars", dancing is the now the new rage in gyms around the world. Watch this Reuters video to see how Canercise works.

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Brainstormers: Part Two (0:29)

Watch this video for insight into the human brain stems from research on phantom limbs and differences between male and female brains.

Brainstormers: Part One (23:40)

A hemispherectomy removes half a brain to reduce or eliminate seizures. This operation is not as detrimental as it might sound. In children, the brain can adapt to perform all functions with one half of a brain.

A Changing Epidemic: AIDS Part 2 (22:18)

This section shows interviews with people from various backgrounds who are living with HIV/AIDS.

A Changing Epidemic: AIDS Part 1 (22:48)

Today, almost 1 million people are infected with HIV. They represent a disease of growing diversity, not restricted to one group or gender.

Simply Science: Animal Systems for Transport (3:28)

Circulatory systems in animals carry oxygen and fuel to the cells. A closed circulatory system uses capillaries to transfer oxygen and fuel. Most vertebrates have a closed circulatory system, where most invertebrates have an open system.

How It's Made: Aluminum Foil (4:34)

Aluminum foil is made from a large block of aluminum that is thinned out in several long and complex stages. Learn more about the process in this clip from "How It's Made" on The Science Channel.

Skeptical Inquirer: The Ritual of Firewalking (2:30)

Is it possible to walk over hot coals without burning? Many cultures practice fire walking as seen in this clip from "Skeptical Inquirer" on The Science Channel.

Skills for Healthy Living: Sex and Consequences (30:53)

This video explores the consequences of teenage sex and alternatives to sexual activity.

Skills for Healthy Living: Setting Goals (29:51)

In addition to eating healthy foods and exercising, setting health goals is important to maintaining a healthy lifestyle. Learn more about health goals in this video.

Skills for Healthy Living: Weighing the Risks (29:28)

Teens may face a lot of pressure to try drugs and alcohol. In this video, listen to several teens who have learned -- sometimes the hard way -- to say no.