Beginners rarely fail their diet with one obviously bad decision — it's usually a handful of small, repeated habits that quietly undo an otherwise solid effort.
Underestimating liquid calories
Sugary coffee drinks, juices, and sodas add up fast and are frequently left out of a member's own mental tally of what they've eaten.
Overestimating exercise calorie burn
A workout genuinely burns fewer calories than most people assume, which makes 'earning' a large post-workout meal a common, easily explained miscalculation.