This was a good year.  Avoided COVID.  Am at the best  Body Mass Index  in at least the past quarter century.  I've never been, as such, fat.  Well, maybe when I was around 1 year old.  But to the present. I saw 146.8 pounds on the scale a couple days ago.  My BMI is thus 23.0, just above average in the optimal green category. My weight before the pandemic was 165, or a BMI of 25.8, in the overweight category. Through a strict vegetable and little solid carbohydrate diet, with few snacks and almost no dessert, my weight dropped to 154, a BMI of 24.1, which placed me just in the optimal category. I just returned from a  five-week trip , including a 21-day Regent Seven Seas Explorer cruise, and saw 155.4 pounds, a BMI of 24.3, still barely in the optimal category.  But the amazing thing is that I thought I had gained at least 6 pounds, for I ate and drank a lot.  Too much. The solution, I determined, was a lot of sleep . True, we rema...