Body weight exercises
Learning Center
Video: Squat exercise
The squat is an exercise that targets the leg muscles. See how it's done.
Video: Rotator cuff damage
See how your rotator cuff can become damaged.
Video: Ovulation
Ovulation — the release of an egg from an ovary — occurs about midway through the menstrual cycle. See how it happens.
Video: Modified pushup
The modified pushup is less challenging than a classic pushup. See how it's done.
Video: Melanoma — Early stage and advanced melanoma
Melanoma — Video explains early-stage melanoma and advanced melanoma.
Video: Lunge exercise
The lunge is an exercise that targets the leg muscles. See how it's done.
Video: How cancer spreads
Watch this video to see how cancer spreads (metastasizes).
Video: Heart and circulatory system
Watch this video to see how a healthy heart works.
Video: Abdominal crunch
The abdominal crunch is a classic core-strength exercise. See how it's done.
Video: 3 things you didn't know about cold sores
Cold sores on the lips can be embarrassing and tough to hide. Most people who are infected with the virus that causes cold sores never develop symptoms.
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