Using my latest method, which is designed to be a High Intensity Use of Time, I have done 94 tasks out of 149 in the last 24 hours with 55 tasks remaining on the list, mostly re-entries.
During the day I was absent at a pub lunch with friends for four hours.
I experienced no resistance, got everything of importance done (and everything of lesser importance too). And instead of feeling exhausted, I have been getting steadily more energetic throughout the day.
By the time I went to bed less than four hours after posting the above I had done a further 30 tasks with 59 remaining on the list.