Narrative:

Our flight time for the day was a bit more than 10+00 while duty time was approximately 13+30. When I got to the hotel; I changed clothes and worked out. When I returned to my room; I showered and laid down to take a nap. When I awoke; the local time was approximately XA30. I watched T.V. And had some fruit for dinner. I was unable to sleep; so I remained awake until about XK00 in the morning; and ordered room service for breakfast. I had 2 poached eggs with toast and grapefruit juice. After breakfast; I showered and then laid down to sleep prior to our departure from the hotel which was set for XT00 local time. My rest was sporadic. I would sleep for a while and then wake up. I would then start the process again; and this continued up to my wake up time.we left at XT00 and proceeded to the airport. After arriving at the aircraft; the preflight was completed and I returned to the cockpit to prepare for our departure. We completed our checklists; received our ATC clearance; and completed our preparations for departure. As we taxied out; I began to feel sick at my stomach. I also began to feel tired. When the sickness and fatigue did not pass; I decided to return to the gate as this was the safest course of action. As we returned to the gate; the feelings of fatigue and sickness continued.when we arrived at the gate we secured the aircraft. After this had been accomplished; the sickness began to subside a bit and I went to change my shirt as we prepared to go back to the hotel. I left the aircraft; walked down the stairs; retrieved my luggage and boarded the crew bus to the terminal in order to clear immigration. We then took the car to the hotel. During our ride to the hotel I still felt tired and sick at my stomach but it was not as intense as it had been earlier.after checking into my room I ate a candy bar from the mini bar and almost immediately began to feel better. I showered and laid down and slept for approximately five hours when I received a call to set up a physical here. I accomplished the physical and later flew back to the U.south on commercial flights. In retrospect; I believe that I had a low blood sugar event which was compounded by a lack of quality sleep. The breakfast I had was likely not enough to carry me through the day; and I had skipped lunch so that I might get a bit more rest. This was a mistake that I will not make again. Also; I believe that I slept too long during my nap; and this kept me awake through the evening thereby disrupting my sleep cycle for the coming day.

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Original NASA ASRS Text

Title: Following a stressful layover which provided neither rest nor proper nourishment; the Captain of a B767-300 returned to the departure gate when he became ill during taxi for takeoff.

Narrative: Our flight time for the day was a bit more than 10+00 while duty time was approximately 13+30. When I got to the hotel; I changed clothes and worked out. When I returned to my room; I showered and laid down to take a nap. When I awoke; the local time was approximately XA30. I watched T.V. and had some fruit for dinner. I was unable to sleep; so I remained awake until about XK00 in the morning; and ordered room service for breakfast. I had 2 poached eggs with toast and grapefruit juice. After breakfast; I showered and then laid down to sleep prior to our departure from the hotel which was set for XT00 local time. My rest was sporadic. I would sleep for a while and then wake up. I would then start the process again; and this continued up to my wake up time.We left at XT00 and proceeded to the airport. After arriving at the aircraft; the preflight was completed and I returned to the cockpit to prepare for our departure. We completed our checklists; received our ATC clearance; and completed our preparations for departure. As we taxied out; I began to feel sick at my stomach. I also began to feel tired. When the sickness and fatigue did not pass; I decided to return to the gate as this was the safest course of action. As we returned to the gate; the feelings of fatigue and sickness continued.When we arrived at the gate we secured the aircraft. After this had been accomplished; the sickness began to subside a bit and I went to change my shirt as we prepared to go back to the hotel. I left the aircraft; walked down the stairs; retrieved my luggage and boarded the crew bus to the terminal in order to clear Immigration. We then took the car to the hotel. During our ride to the hotel I still felt tired and sick at my stomach but it was not as intense as it had been earlier.After checking into my room I ate a candy bar from the mini bar and almost immediately began to feel better. I showered and laid down and slept for approximately five hours when I received a call to set up a physical here. I accomplished the physical and later flew back to the U.S on commercial flights. In retrospect; I believe that I had a low blood sugar event which was compounded by a lack of quality sleep. The breakfast I had was likely not enough to carry me through the day; and I had skipped lunch so that I might get a bit more rest. This was a mistake that I will not make again. Also; I believe that I slept too long during my nap; and this kept me awake through the evening thereby disrupting my sleep cycle for the coming day.

Data retrieved from NASA's ASRS site as of April 2012 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.