Free weights
Learning Center
Video: Calf raise with dumbbell
The calf raise targets the calf muscles in the legs. See how it's done.
Video: Biceps curl with dumbbell
The biceps curl builds strength in the upper arm. See how it's done.
Video: Biceps curl with barbell
The biceps curl builds strength in the upper arm. See how it's done.
Video: Bent-over row with dumbbell
The bent-over row targets the back of the shoulder. See how it's done.
Video: An asthma attack
What happens to your airways during an asthma attack?
Ventricular fibrillation
Without fast treatment, this heart rhythm problem can cause death within minutes. Learn the symptoms of VFib and what actions to take to save a life.
Vascular rings
Learn more about this condition in which malformations of the aortic arch encircle the windpipe and esophagus and can press against them.
Vaginal agenesis
In this rare condition that occurs before birth, the vagina doesn't develop and the uterus may only develop partially or not at all. Learn about treatment.
Urinalysis
This common lab test checks urine for signs of disease and for clues about overall health.
Ureteral obstruction
Learn about what causes blockage of the tubes that carry urine from the kidneys to the bladder, tests you might need and how the condition can be treated.
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