Fitness basics
Learning Center
Child growth: Can you predict adult height?
Concerned about your child's growth? Find out how you can estimate your child's adult height.
Multivitamins: Do young children need them?
Multivitamins: Are they good insurance for young children?
Exercise and illness: Work out with a cold?
Play it smart. Ease up on exercise if you have a cold.
Bladder outlet obstruction: Causes in men?
Find out more about the causes of male bladder outlet obstruction and possible next steps.
Heart rate: What's normal?
A normal resting heart rate for adults ranges from 60 to 100 beats per minute. A heart rate above or below that may signal a problem.
Warm-mist versus cool-mist humidifier: Which is better for a cold?
Warm-mist and cool-mist humidifiers are equally effective in humidifying the air.
Enlarged prostate: Does diet play a role?
Lifestyle factors such as diet appear to play a role in benign prostatic hyperplasia (BPH). See what lifestyle changes may help with symptoms.
Flu shots for kids: Does my child need a flu shot?
Know the latest recommendations for children's flu vaccines.
COVID-19 variants: What's the concern?
The virus that causes COVID-19 has changed over time, which has affected prevention, diagnosis and treatment of COVID-19.
Uncircumcised penis: Is special care needed?
Know how to wash and care for your child's uncircumcised penis.
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