Fitness basics
Learning Center
Herd immunity and COVID-19: What you need to know
To protect groups of people over time, it helps to know what level of recovery or vaccination in a population makes it hard for a germ to spread.
Childhood vaccines: Tough questions, straight answers
When it comes to childhood vaccines, misinformation is common. Get the facts about vaccine safety from health experts.
Asthma: Limit asthma attacks caused by colds or flu
If you have asthma, find out how to keep your sneeze from turning into a wheeze due to colds or flu.
Treating COVID-19 at home: Care tips for you and others
COVID-19 can sometimes be treated at home. Understand emergency symptoms to watch for, how to protect others if you're ill, how to protect yourself while caring for a sick loved one and other coping tips.
Safety tips for attending school during COVID-19
Consider prevention strategies that you and your child's school can follow to help protect your child from COVID-19.
Balance exercises
Balance exercises can improve your balance and help prevent falls. See how they're done.
Sun damage
See photos of common skin conditions that are caused by too much time in the sun.
COVID-19 vs. flu: Similarities and differences
Find out the similarities and differences between coronavirus disease 2019 (COVID-19) and the flu (influenza) and learn about ways to prevent getting these diseases.
Placenta: How it works, what's normal
Understand how this pregnancy organ works and what conditions can affect it.
Strength training: OK for kids?
It's good for kids to build strength as long as form and safety come first.
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