Stretching and flexibility
Learning Center
Stretching: Focus on flexibility
Learn why stretching your muscles is an important part of your exercise routine and how to do it safely.
Ankylosing spondylitis
Learn about this inflammatory disease that can cause some of the vertebrae in the spine to fuse over time.
A guide to basic stretches
Find ways to stretch safely with this guide.
Golf stretches for a more fluid swing
Golf stretches help promote a more fluid golf swing. And that could boost your game.
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.
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.