Blueberries are 81 calories a cup, so even if they vary by as much as 20 %, it is just 16.2 calories. hardly worth consideration.
We tend to eat the same brands, and quantities over time, so as long as you are losing, I wouldn't worry about whether a cup of blueberries was 75 calories, or 86.. I would just use the 81, and it would probably average out over time.
I don't think anyone got fat, eating blueberries. I also think that if you did the same with any food, you would find discrepancies. I recently saw some Fiber One cereal with " 80 calories per serving " on the box. It also had 25 grams of carbs..X 4 calories a gram = 100 calories, not counting the small amount of protein/fat in it, it is still obviously wrong.
You can't get everything 100% right, and that is why SP has ranges of 350 calories. It isn't necessary to be that strict. We bounce around that range by more than 16 calories day to day, but as long as we are headed in the general direction, it is fine. If you have a 500 calorie daily deficit, and it is dropped to 484, because of faulty blueberry labeling, you still lose weight. Discrepancies like this with many foods, may add up to 100 calories a day, but even at a 350 calorie deficit, you are losing weight.
This may explain why you lose a lb in 10 days, instead of 7 days, as planned, but not a cause for concern.. 3 lbs a month is good enough.It is eye-opening to learn why the math never adds up though. You have a 500 calorie deficit, and should be losing 4.285714 lbs. every 30 days.. why is it ONLY 3.5 lbs!!!
Now I want some blueberries!
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| current weight: 179.6