stress can do a lot of things you would never expect. And no matter how invincible you feel now, stress builds up in the background, drip-drip kind of build up

stress can do a lot of things you would never expect. And no matter how invincible you feel now, stress builds up in the background, drip-drip kind of build up over years. Then one day, you find you have an ulcer or a panic attack or some other physical manifestation http://en.wikipedia.org/wiki/Stress_(physiology) http://en.wikipedia.org/wiki/Stress_(physiology)