Whether calculating your target heart rate, assessing your risk for a common condition, or testing your knowledge of today's health concerns, these tools help you manage your health. They are easy to use, informative, and often surprising.
Premenstrual syndrome (PMS) refers to a range of monthly symptoms that starts 1 to 2 weeks before your menstrual period. It's common to have at least some PMS symptoms. Learn more about PMS by taking this quiz.