Yes, that's right. Lack of sleep, poor eating. All mixed up with a lot of overnight work during a chaotic migration project. The day before that happened I had a sign that I should have taken seriously. I arrived at home, opened the front door, and felt on the floor. I had no strength at all in my legs. I started to cry without any apparent reason. Could not control myself and that never happened to me before.

Were you consuming large amounts of caffeine at the time? I'm wondering if there isn't a common dietary component of burn outs since it probably takes quite a bit of energy to work very long hours. (e.g. High calorie [processed] food, caffeine/other stimulants)

You are right. I was consuming large amounts of caffeine. Usually 4 to 5 espressos per day, 0.5L of filter coffee, plus large amounts of beer on Friday and Saturday nights. At that time, I was in a gym, 3 to 4 times per week. I was told, by the doctor, that it would help me to clear my mind from work. Regarding medication, I was consuming some vitamins.

That's why you should sleep at your desk if you are tired; it is much healthier than getting sick and fainting. Plus; you can wake up if anyone makes enough noise and quickly get back to pretending you are working.