Body weight exercises
Learning Center
Video: Step-up exercise
The step-up is an exercise for the legs and buttocks. See how it's done.
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.