Stress can be caused by survival threats, worrying, environmental pressures, and overwork. It impacts the body by increasing blood pressure, heart rate, breathing, and muscle tension. Managing stress involves organizing one's time, controlling one's environment, self-care, exercise, relaxation, rest, awareness of stress signals, healthy eating, enjoyment, and developing positive coping strategies. Specific tips include planning ahead, simplifying, getting support, relaxation breathing, writing feelings down, and maintaining a positive outlook.