Fitness basics
Learning Center
Balance exercises
Balance exercises can improve your balance and help prevent falls. See how they're done.
Diarrhea
Diarrhea: Symptom — Overview covers definition, causes of acute and chronic diarrhea.
Exercise and chronic disease: Get the facts
Find out about the benefits of working out with a long-lasting disease and how to exercise safely.
Exercise and illness: Work out with a cold?
Play it smart. Ease up on exercise if you have a cold.
Exercise: 7 benefits of regular physical activity
Improve your heart health, mood, stamina and more with regular physical activity.
Fitness program: 5 steps to get started
Starting a fitness program is easier than you might think. Follow these five steps.
Fitness training: Elements of a well-rounded routine
Is your fitness training program complete? Here's help to make sure you have all the basics in your program.
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.
High blood pressure in children
Children can develop high blood pressure for the same reasons adults do — excess weight, poor nutrition and lack of exercise.
How fit are you? See how you measure up
Find your fitness level with these simple fitness tests.