Core exercises
Learning Center
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.
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.
Wisdom tooth removal
If you don't have enough room in your mouth for wisdom teeth, or they're painful, infected or cause other dental problems, they may need to be removed.
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: 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: How to choose a fitness ball
A fitness ball is versatile, but it's not one-size-fits-all. See your options.
Video: Fitness ball bridge with heel dig
Comfortable with the fitness ball bridge? See how to add a heel dig.
Video: Bridge with fitness ball
You can do many core exercises with a fitness ball. See the bridge.
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