Aerobic exercise
Learning Center
Aquatic exercises
Thinking about signing up for an aquatic exercise class? Or trying water exercises on your own? Check out these pool moves.
Avulsion fracture: How is it treated?
Surgery is rarely needed to reattach a small chunk of bone when it gets pulled away from the main part of the bone by a tendon or ligament.
Bacterial vs. viral infections: How do they differ?
Understand the differences between bacterial and viral infections.
Barefoot running shoes: Better than traditional running shoes?
Barefoot running shoes are designed to protect your feet while mimicking the mechanics of barefoot running.
Barrel chest: What causes it?
Barrel chest isn't a disease, but it may indicate an underlying condition, such as chronic obstructive pulmonary disease (COPD).
Bladder infection in men
Although women are more likely to get bladder infections, men can get them, too. Learn about signs and symptoms and what could put you at risk.
Blood donation
Find out what to expect during blood donation and how your blood will be used to help others.
Blood pressure: Is it affected by cold weather?
Blood pressure generally is higher in the winter than in the summer. Discover why.
Bulging disk vs. herniated disk: What's the difference?
Compared with a bulging disk, a herniated disk is more likely to cause pain because it protrudes farther and is more likely to compress nerve roots.
Bump on the head: When is it a serious head injury?
Even a minor injury to the scalp or forehead can cause a large lump. Find out when it's time to see a healthcare professional.
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