When you sit for extended periods, your body (shoulders, neck, lower back) often suffers. Here's a tip a traveling salesman once taught me. When you drive a long distance, every 1/2 hour or so, change the position of your seat.
Try this exercise to help reduce your stress and build up your resistance to future stressors. Start on your hands and knees. Slowly "stand up" so that you are resting on your hands and feet in a triangle. Both your hands and your feet should be shoulder width...
Massage is a wonderful antidote to stress and a powerful way to relax. Through the act of relaxation, we stimulate a part of the brain (the parasympathetic nervous system) that slows down the heart rate, the rate of breathing, lowers blood pressure and stimulates digestion and immunity.