Aerobic exercise
Learning Center
Syphilis
Understand how this infectious disease spreads, what you can do to prevent it and how it's treated.
Post-traumatic stress disorder (PTSD)
Post-traumatic stress disorder (PTSD) is a mental health condition triggered by a terrifying event, causing flashbacks, nightmares and severe anxiety.
Bruxism (teeth grinding)
Bruxism is a condition in which you grind, gnash or clench your teeth unconsciously when you're awake or while you're sleeping.
Kidney cancer
Learn about the symptoms and causes of kidney cancer and renal cell carcinoma. Find out about treatments, such as nephrectomy and immunotherapy.
Latex allergy
This allergy is a reaction to proteins in natural rubber latex — found in medical gloves, balloons and more. Find out how to avoid many common triggers.
Aerobic exercise: How to warm up and cool down
Learn how to warm up and cool down the safe way.
Aging: What to expect
Understand the natural changes that come with aging.
Alzheimer's genes: Are you at risk?
What role do genes play in developing Alzheimer's? Are you at risk?
Exercise intensity: How to measure it
To get the most out of exercising, aim for moderate to vigorous exercise intensity. See how to judge your exercise intensity.
Smokeless tobacco products
Learn the risks of using products such as chewing tobacco, snuff and snus.
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