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.
Genital herpes is a common sexually transmitted infection (STI) in the U.S. An STI is also called a sexually transmitted disease (STD). About 1 in 6 teens and adults has genital herpes. Find out more about genital herpes by taking this quiz.