Irrelevant. Humans are also not known for keeping track of how fast they run to millisecond precision but people do it to achieve a goal. If your goal is to l

Irrelevant. Humans are also not known for keeping track of how fast they run to millisecond precision but people do it to achieve a goal. If your goal is to lose weight, track calories to do it. I can lose weight on demand eating nothing but junk but keeping track of how much of it I'm eating.