Additionally, simply taking a walk can be such an easy way to break up a stressful routine, reconnect with nature, connect with friends and loved ones, and take a much needed mental time out, if for nothing else than to increase subsequent productivity and endurance! So the next time you feel cooped up, stressed-out and frustrated, consider taking a walk, and try to notice all that is around you. You may find that the simple act of walking and noticing may have a surprising effect on your mood, thoughts and sense of connectedness.
Please see the link below on the comprehensive benefits of walking.
http://health.yahoo.net/experts/dayinhealth/easiest-way-live-longer