I just figure out that coffee makes me tired. 1 week into work and on Friday I was exausted, like completly knocked out, while the week before i was skiing 7-10 hours a day and just felt energized in the morning jumping out of bed. I realized today on my 5th cup of coffee while programming that this is a big hit in my nervous system. Will try to stick with 1 cup a day ... oh but i love coffeee :D