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.
If you notice you feel depressed when the seasons change, you may have seasonal affective disorder (SAD). This condition is marked by times of depression during certain seasons. This is followed by times of normal or high mood the rest of the year. Take this quiz to learn more.