Accuracy is near impossible
Tracking your calorie intake accurately is notoriously difficult.For starters, it's hard to know how many calories are in the food you're eating.While there are several online directories of calorie counts for foods, getting precise numbers is still not straightforward.
For instance, if you're looking up the calories in a half-cup serving of rice, that number will be different if the rice is cooked or uncooked.It's even harder for fruits and veggies - if there are 105 calories in a banana, how big is that banana?With so many different sizes, each is going to have a different amount of calories.
"You have to essentially know precisely what the calorie content of the food is that you're eating and that gets difficult to do without getting even more meticulous by weighing and measuring things out," Gaviria said.
"Not to mention that it's just very time-consuming, it takes up a lot of brain space to be like, 'Okay, well, if I need to have this meal, I only have 500 calories left, what meal can I build that is going to be 500 calories?'"
Besides trying to guess the calories in a given portion size and plan your daily meals down to a specific number of calories, it can also be taxing to remember to track every calorie.
Many forget to track oils or butter used to sauté, or the condiments added to a sandwich or dressing added to a salad.It's easy to skip tracking whole meals if you're eating on the go.Even simple omissions can add up to 500 to 700 calories that weren't counted.