An asthma attack

Plank with fitness ball

You can do many core exercises with a fitness ball. See the plank.

Bridge with fitness ball

You can do many core exercises with a fitness ball. See the bridge.

Causes of endometriosis

Animation of endometriosis as it develops and causes tissue damage in a woman's reproductive tract.

Keratoconus

Scleral contact lenses may be an alternative to surgery for many patients with keratoconus.

Aimovig: How to Inject Demonstration

Aimovig is a CGRP antagonist that is used to prevent migraines in adults.

• Aimovig