Answers:
Oh man...I was the chef of a huge restaurant contained by Massachusetts and some times when i knew we be going to get really busy I would slam 6 of them , this over cup after cup of coffee I would start drinking in the morning. beforehand long I was screaming at every one within the kitchen with out realize it. The owner finally came up to me sooner or later and asked me not to drink any more espresso. He explained why and we both laughed our a.sses stale. Wow..good times..
Other Answers:
Actually espresso have LESS caffiene than regular coffee. People think that because it have a strong taste it have a lot of caffiene so you win a placebo effect.
Caffeine make me tired.
The other day, I have one of those "rockstar" energy drinks or doesn`t matter what, and I just completly crashed afterwards. I guess the 150 mgs of caffeine really did the trick near and it probably didn't help that I'm drastically anorexic.
Caffine IS a drug and can basis heart arrythmias above 100mg .so please do not push your luck. It comes out like alcohol...as contained by amout of caffine in a jiffy...over 20 espresso in1 hr is not good...by the process there is NO X contained by espresso