Hamstring Strain for Teens
A hamstring strain happens when one or more of the muscles in the back of the leg gets stretched too far and starts to tear. Find out how to treat hamstring strains in this article for teens.
Strength Training for Teens
Is working out with weights safe for teens? The best way to build muscle tone and definition is to combine aerobic and flexibility exercises with the right kind of strength training.
Quadriceps Contusion for Teens
Quadriceps contusions are common in sports that have a lot of direct contact or a chance of collisions or wipeouts. Find out what to do if you get one - and how to avoid them.
What Causes Muscle Twitches? for Teens
Find out what the experts have to say.
Groin Strain for Teens
A groin strain is a tear of one or more of the muscles that help you squeeze your legs together. Find out what to do for groin strains - and why it's important not to go back to sports or other activities too quickly.
Why Exercise Is Wise for Teens
Getting the right amount of exercise can rev up your energy levels and even help you to feel better emotionally. Find out why.
Achilles Tendonitis for Teens
If the tendon just above your heel becomes swollen or irritated due to overuse, it can lead to a painful condition called Achilles tendonitis. Find out how to treat it - and prevent it.
Lou Gehrig's Disease (ALS) for Kids
Lou Gehrig's disease refers to a disorder called amyotrophic lateral sclerosis, or ALS. This disease damages the neuromuscular system, which allows the body to move.
Becker Muscular Dystrophy for Parents
Becker muscular dystrophy is a genetic disorder that gradually makes the body's muscles weaker and smaller. It causes less severe problems than the most common type of MD, Duchenne muscular dystrophy.
Tetanus for Teens
Tetanus is a bacterial infection that grows in a contaminated wound. Because it can be serious, it's important to get immunized. Find out more.