Between your busy work schedule, taking care of the kids, running errands, and the many other things you have to do in a day, it's easy to forget the amount of stress you're actually under. All that tension could start a chain reaction of health problems. When you repeatedly get stressed, your nervous system stays keyed up, so even small amounts of stress can make you feel overwhelmed, say experts. That's why it's so important to build in a relaxation routine for those times when life goes haywire. Learn how to cultivate calm with these simple suggestions.