It helped me a lot. It was very easy to use, and by not having any off-limits foods or similar, just a calorie target, it helped me find meals that I enjoyed while keeping me full.
It also was a nice perspective to have in mind for me. Calories in, calories out means it doesn't really matter what I do today, it's what I do each day that matters.
It also was a nice perspective to have in mind for me. Calories in, calories out means it doesn't really matter what I do today, it's what I do each day that matters.