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Gout

This animation shows uric acid crystals moving to the big toe joint causing pain.

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What happens during obstructive sleep apnea?

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

Biceps curl with weight machine

The biceps curl with weight machine builds strength in the upper arm. See how it's done.

Lock it Up: Medicine Safety in Your Home

Every year thousands of children are hospitalized and some die after taking medicine not meant for them. Teens share stolen prescription drugs at "pharm parties" and toddlers are tempted by colorful pills that look like candy. In this Consumer Update video, FDA pharmacist Connie Jung explains how you can prevent harm by locking your medicine up.

Bent-over row with dumbbell

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

Retina

This animation shows the process in which light is transformed by the retina as electrical impulses that travel to the brain through the optic nerve.

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