And then doctor will say: it's normal, don't worry, just shift your working hours to match your cycle. ;-) Typical programmer is introvert phlegmatic or melanch

And then doctor will say: it's normal, don't worry, just shift your working hours to match your cycle. ;-) Typical programmer is introvert phlegmatic or melancholic. Quote: Respecting the Daily Cycle The daily circadian cycle is divided into four six hour periods, with each one having a different nature and temperament. The temperaments of these different periods need to be respected. The six hour period surrounding noon is the period of maximum light, heat and activity; its temperament is Choleric. Accordingly, one should remain active at midday, from 9 AM to 3 PM, and not sleep or nap during this period. Conversely, the opposing six hour period surrounding midnight, from 9 PM to 3 AM, is Phlegmatic, being the coldest, darkest and most passive/quiet period of the day. Accordingly, one should be either sleeping or winding down the day's activities to a close during this period. For the sake of one's health, one should start winding down at 9 PM and try to get to bed by 10 PM or not long thereafter. Going to bed later than this aggravates nervous tension and fatigue. The other two six hour periods between these two polarities are transitional periods, and surround sunrise and sunset, which are the transitions between daytime and nighttime. The Sanguine period, surrounding sunrise, is the period of awakening. The Melancholic period, surrounding sunset, is a period of a gradual tapering off of the day's activities and the shift to a more quiet, contemplative evening mode. http://www.greekmedicine.net/hygiene/Sleep_and_Wakefulness.html http://www.greekmedicine.net/hygiene/Sleep_and_Wakefulness.h...