Ankle sprain

Neck stretches for the workplace

Neck stretches can help prevent stiffness. Try these stretches at work.

Reverse fly with dumbbell for upper back

The reverse fly exercise targets the upper back. See how it's done.

What happens during obstructive sleep apnea?

Sleep apnea -- Watch this video to see how snoring and obstructive sleep apnea occur.

• Sleep Disorders

Squat exercises for leg muscles

The squat is an exercise that targets the leg muscles. See how it's done.

An asthma attack

In an asthma attack, inflamed and swollen airways make breathing difficult.