Correct. Calories really do matter. I calculate them. Pilates instructor & past gymnast & frequenting gym (weight training included) since 13. Average daily hours active (working out not teaching) in gym/pilates studio +3. Steps daily over 10k. If I eat over 1200 calories, for longer than a week, I gain. To be fair, the day I eat 1500 the next days the scale is up to 3-4 kg more. Weight training, steps, pilates, clean eating but over 1200 cals, on scale over 1-2months can be up to 7-10kg.