Elastic resistance
Learning Center
Video: Ovulation
Ovulation — the release of an egg from an ovary — occurs about midway through the menstrual cycle. See how it happens.
Video: Rotator cuff damage
See how your rotator cuff can become damaged.
Video: Seated row with resistance tubing
The seated row targets the muscles in the upper back. See how it's done.
Video: Squat with resistance tubing
The squat is an exercise that targets the leg muscles. See how it's done.
Video: Standing hip abduction with resistance tubing
The standing hip abduction exercise targets the hip muscles. See how it's done.
Video: Triceps kickback with resistance tubing
The triceps kickback targets the back of the upper arm. See how it's done.
Walking pneumonia: What does it mean?
Walking pneumonia is a mild bacterial infection that resembles a cold. It usually does not require bed rest or a hospital stay.
What is aspirin-exacerbated respiratory disease (AERD)?
AERD, also called Samter's triad, has three features: asthma, recurring nasal polyps, and sensitivity to aspirin and drugs such as ibuprofen and naproxen.
What is chikungunya fever, and should I be worried?
Learn more about this mosquito-borne virus — found in Africa, Asia, India, and parts of Europe and the Americas — that causes fever and severe joint pain.
What's the difference between H1N1 flu and influenza A?
H1N1 flu is a subcategory of influenza A.