Triceps extension with weight machine

Squat exercises with resistance tubing for leg muscles

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

Mitral valve regurgitation

Mitral valve regurgitation is shown in this video.

Keratoconus

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

Vyvanse: Precautions for Use

A brief overview of precautions, drug interactions, potential for abuse and storage of Vyvanse.

• Vyvanse

Anatomy of Nicotine Addiction

This animation illustrates how smoking changes your brain, causing nicotine addiction.