Fitness basics
Learning Center
Sun damage
See photos of common skin conditions that are caused by too much time in the sun.
Sudden death in young people: Heart problems often blamed
Sudden cardiac death in young people is rare. It's not the same as sudden cardiac arrest. Learn about the risk factors and causes and when screening is needed.
Stroke rehabilitation: What to expect as you recover
Stroke rehabilitation is important for recovery after stroke. Learn about the physical, cognitive and other therapies used in stroke rehabilitation.
Strength training: OK for kids?
It's good for kids to build strength as long as form and safety come first.
Stem cells: What they are and what they do
Get answers about where stem cells come from, why they're important for understanding and treating disease, and how they are used.
Staying healthy in school: Kid-friendly tips
Consider these tips for keeping your kids healthy in school.
Stay fit at any age
Slow down the aging process with these regular fitness activities.
Statins: Are these cholesterol-lowering drugs right for you?
Learn more about the risks and benefits of taking cholesterol-lowering medicines before deciding if they're right for you.
Statin side effects: Weigh the benefits and risks
Statin side effects can be uncomfortable but are rarely dangerous.
Stages of labor and birth: Baby, it's time!
Find out what happens during the different stages of labor and birth.
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