Fitness basics
Learning Center
COVID-19: Who's at higher risk of serious symptoms?
Advanced age and some health conditions can raise the risk of serious COVID-19 (coronavirus disease 2019) illness.
Debunking COVID-19 myths
Some information you come across about COVID-19 may be out of date or false. Learn about COVID-19 myths so you can bust them when you see them.
Safe outdoor activities during the COVID-19 pandemic
Looking for fun outdoor activities you can enjoy safely during the COVID-19 pandemic? Here are several options to try.
COVID-19: Long-term effects
Learn about the possible long-term effects of COVID-19.
Different types of COVID-19 vaccines: How they work
Find out how different COVID-19 vaccines cause your body to create antibodies that will fight the COVID-19 virus.
Intraoperative magnetic resonance imaging (iMRI)
Find out how neurosurgeons use intraoperative magnetic resonance imaging (iMRI) during brain surgery.
Aquatic exercises
Thinking about signing up for an aquatic exercise class? Or trying water exercises on your own? Check out these pool moves.
Fetal ultrasound
Look at ultrasound images and learn how to understand what you're seeing.
Poison ivy and other summer skin irritants
Take a look at these bumps, bites and rashes. Find out what causes them and how they can be treated.
Video: Endovenous thermal ablation
Video showing endovenous thermal ablation procedure to treat varicose veins.
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