Stress is the body's response to any demand placed on it. It can be caused by both good and bad experiences. Stress responses help the body adapt and can be helpful in moderation, but excessive stress takes a toll physically and emotionally. Different types of stress include survival stress from physical danger, internal stress from worrying, and environmental stress from one's surroundings. Stress during pregnancy can negatively impact the fetus's development and the child's behavior and health. Managing stress requires recognizing triggers, using relaxation techniques, maintaining perspective, and balancing activities with rest.