Aerobic exercise
Learning Center
10,000 steps a day: Too low? Too high?
Work up to a goal of walking 10,000 steps each day, depending on your starting fitness level, for numerous health benefits.
5K run: 7-week training schedule for beginners
Running a 5K? Make it to race day in seven weeks.
Abnormal sperm morphology: What does it mean?
Abnormal sperm morphology may be a contributing factor in male infertility.
Active surveillance for prostate cancer
Learn about why doctors may recommend active surveillance for prostate cancer and what to expect.
Aerobic exercise: How to warm up and cool down
Learn how to warm up and cool down the safe way.
Aerobic exercise: Top 10 reasons to get physical
Need inspiration to work out? Consider the top 10 benefits of aerobic exercise.
Air travel with infant: Is it safe?
Planning for air travel with an infant? Know how air travel can affect a newborn's ears and breathing, and what you can do to keep your baby comfortable.
Albinism
In this group of inherited disorders, the body makes little or no melanin, a pigment that determines hair, skin and eye color and vision development.
Ambiguous genitalia
Learn about causes and treatment of ambiguous genitalia, a rare disorder of sex development in which a baby's external genitals are not clearly male or female.
Angelman syndrome
Learn about this genetic disorder that causes developmental delays, problems with speech and other symptoms.
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