Weight machine exercises
Learning Center
Video: Seated hamstring curl with weight machine
The hamstring curl exercise targets the back of the thigh. See how it's done.
Video: Seated leg press with weight machine
The leg press exercise strengthens the lower body. See how it's done.
Video: Seated row with weight machine
The seated row targets the muscles in the upper back. See how it's done.
Video: Sentinel node biopsy for melanoma
Video shows sentinel node biopsy to determine whether melanoma has spread.
Video: Skin cancer — How skin cancer develops
Watch this video to see what melanoma and nonmelanoma skin cancers look like and how they develop.
Video: Triceps extension with weight machine
The triceps extension targets the back of the upper arm. See how it's done.
Virtual colonoscopy
Unlike other colon cancer screening tests, this imaging test doesn't use a scope to examine your colon. Learn how it works and what to expect.
Withdrawal method (coitus interruptus)
The withdrawal method — pulling the penis out of the vagina before ejaculation — isn't the most effective birth control. Learn about the pros and cons.
Yeast infection in men: How can I tell if I have one?
Yeast infections can occur in men, causing inflammation of the penis (balanitis). Learn what signs and symptoms could mean you have a yeast infection.
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