How diabetes affects your blood sugar

MRI

MRI video - What to expect and how to prepare for a magnetic resonance imaging scan.

Bent-over row with dumbbell

The bent-over row with dumbbell targets the back of the shoulder. See how it's done.

Fitness ball bridge with heel dig

Comfortable with the fitness ball bridge? See how to add a heel dig.

LASIK eye surgery

Watch this video to see how LASIK eye surgery is done.

Corneal injury

This animation shows corneal infections resulting from corneal injury.

• Vision