If you’ve ever typed something like “eating 1,400 calories and not losing weight” into Google at 11pm, you’re not alone. Thousands of people in the UK do exactly this every week. They cut their food down, they feel hungry, they track everything — and the scale just doesn’t move. The frustrating truth? Most of them aren’t doing it wrong because of laziness or weak willpower. They’re doing it wrong because they started with the wrong number. That number is your TDEE — Total Daily Energy Expenditure — and if you don’t know yours, you’re essentially shooting in the dark. What…