Body weight exercises
Learning Center
Video: Abdominal crunch
The abdominal crunch is a classic core-strength exercise. See how it's done.
Video: An asthma attack
What happens to your airways during an asthma attack?
Video: HSG test for female infertility
Video animation shows the HSG test — an X-ray study to identify causes of female infertility.
Video: Lunge exercise
The lunge is an exercise that targets the leg muscles. See how it's done.
Video: Mammogram for breast cancer — What to expect
Watch video to see what it's like to have a mammogram, or breast cancer detection exam.
Video: Migraine aura
A migraine aura is usually visual, but can also be a sensory, motor or verbal disturbance. This animation shows what happens when you have a migraine aura.
Video: Modified pushup
The modified pushup is less challenging than a classic pushup. See how it's done.
Video: Ovulation
Ovulation — the release of an egg from an ovary — occurs about midway through the menstrual cycle. See how it happens.
Video: Squat exercise
The squat is an exercise that targets the leg muscles. See how it's done.
Video: Step-up exercise
The step-up is an exercise for the legs and buttocks. See how it's done.
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