School's in full swing. So is soccer. Your days have settled into a routine. Your room is neat. You're getting along beautifully with your older brother. You're getting enough sleep, managing to fit exercise into your day, eating balanced meals. . . .

There's that math test tomorrow that you haven't studied for yet. Your best friend sat with someone else at lunch yesterday. You stayed up too late last night reading a mystery instead of your history homework. You forgot your grandmother's birthday. And now you're about to miss the bus -- again.

There are two basic types of stressful events, according to the "Mayo Clinic Family Health Book." One is a powerful "alarm" reaction that gets your body ready for an emergency. Let's say a smoke detector wakes you up in the middle of the night. Before you even think about it, your body gets ready for danger. It produces chemicals that make your heart beat faster. Your muscles tense. Your blood pressure increases. You begin to sweat.