I've been keeping a pretty detailed spreadsheet containing my daily weight, fasting blood glucose reading, and food, broken down into total calories, fat calories, protein calories, net carbs, percentages of each calorie (fat/protein/carb). I also keep a set of running charts for a quick look and correlation of weight, calories, fat and carbs. I do not think this is needed by any means, and would not tell anyone to do it, but I find it interesting, and helpful to determine what is working.

I tried to post a screen shot of my spreadsheet but couldn't figure out how to do it. Clicking on the insert image opened a window asking for text.