Once a year, to kick off the new year, I count calories for a week. Mostly just a mental reset after eating and drinking way too much over the holidays. MyFitnessPal's Premium version is free for 30 days. Breaks down vitamins, fat, and cholesterol , calories, etc. It's a great food education reminder on how exercise fits into the mix. Example: I had no idea that cauliflower has a lot of vitamin C.