Core exercises
Learning Center
Video: Squat and reach with fitness ball
You can do many exercises with a fitness ball. See the squat and reach.
Video: Side exercise with fitness ball
You can do many core exercises with a fitness ball. See a side exercise.
Video: Rotator cuff damage
See how your rotator cuff can become damaged.
Video: Reverse crunch with fitness ball
You can do many core exercises with a fitness ball. See the reverse crunch.
Video: Plank with fitness ball
You can do many core exercises with a fitness ball. See the plank.
Video: Ovulation
Ovulation — the release of an egg from an ovary — occurs about midway through the menstrual cycle. See how it happens.
Video: Melanoma — Early stage and advanced melanoma
Melanoma — Video explains early-stage melanoma and advanced melanoma.
Video: How to choose a fitness ball
A fitness ball is versatile, but it's not one-size-fits-all. See your options.
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.
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