Working under stress...

Stress may be a good adrenaline to people (in particular, me). It's the 2nd day that I sleep only 6 hours; I sleep before 1am and wake up at 7:00am (naturally, no alarm clock). Working in this atomphere makes people have some desire and responsibility to accomplish something everyday. But... how much dosage can I still use this adrenaline? Will over-dosage lead to undedirable effect?

mr blog