Fitness basics
Learning Center
Exercise and chronic disease: Get the facts
Find out about the benefits of working out with a long-lasting disease and how to exercise safely.
Exercise: 7 benefits of regular physical activity
Improve your heart health, mood, stamina and more with regular physical activity.
Exercise and illness: Work out with a cold?
Play it smart. Ease up on exercise if you have a cold.
Fitness program: 5 steps to get started
Starting a fitness program is easier than you might think. Follow these five steps.
Video: Endovenous thermal ablation
Video showing endovenous thermal ablation procedure to treat varicose veins.
Penis fracture: Is it possible?
Know the signs and symptoms of a penis fracture.
Vasectomy reversal
Learn about this microsurgery procedure that can restore your fertility after a vasectomy.
Undescended testicle
Learn about causes, complications and treatment of this condition in which one or both testicles aren't in the usual place within the scrotum.
Gastrointestinal stromal tumor (GIST)
Learn about this type of cancer that usually happens in the stomach or small intestine. Treatments often include surgery and targeted therapy.
Frequent sex: Does it protect against prostate cancer?
Some studies have suggested that frequent ejaculation may reduce the risk of prostate cancer. But other research hasn't supported this idea.
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