Fitness basics
Learning Center
An appointment to exercise? You bet!
If you're having trouble finding time to exercise, pull out your planner. Schedule exercise as you would schedule an important meeting or appointment. Block off the time in your calendar, and stick to it. Setting aside time for a full workout is great, but shorter bursts of exercise count too.
Anal pain
Anal pain: Symptom — Overview covers definition, possible causes of this common symptom.
Angelman syndrome
Learn about this genetic disorder that causes developmental delays, problems with speech and other symptoms.
Aortic valve disease
Learn more about diseases that affect the valve between the heart's main pumping chamber and the body's main artery.
Arcus senilis: A sign of high cholesterol?
With this condition, older adults develop a gray arc around the cornea of the eyes.
Are you ready for a workout?
Sure, you're busy. It's tough to fit in a daily workout. But being prepared to exercise can make all the difference. Put workout clothes, socks and all, on top of the dresser. Stock the fridge with water bottles. Keep athletic shoes and socks in your car, so you can sneak in some laps during your child's practices or rehearsals or while you're waiting to meet a friend for dinner.
Arteriovenous malformation
In this condition, a tangle of blood vessels affects the flow of blood and oxygen. Treatment can help.
Aspirin allergy: What are the symptoms?
An aspirin allergy or sensitivity can cause serious symptoms.
Astigmatism
Imperfect curvature of your eye can cause blurred distance and near vision. Learn about this common and treatable eye condition.
Atrial septal defect (ASD)
This heart problem that is present at birth causes a hole between the heart's upper chambers. It can be treated.
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