I find simple exercise helps cope with stress in sevral ways. As a way of healthy coping, it also helps with breathing, it helps with your engery level(fatiuge) to be productive through out the day and helps make me tired so I can sleep better. Regular exercise helps me with my weight, that is one more stresser I don't have and if I am out and some one wants some ice cream I don't feel guilty if I ran that morning.