Fitness basics
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Balance exercises
Balance exercises can improve your balance and help prevent falls. See how they're done.
Multiple sclerosis
This nervous system disorder causes a range of symptoms — and while there's no cure, it's possible to have long periods of remission.
Blood donation
Find out what to expect during blood donation and how your blood will be used to help others.
Masculinizing surgery
Find out how masculinizing surgical procedures can help better align the body with a person's gender identity.
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.
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