The 7 Most Common Mistakes When Trying to Lose Weight

80% of weight-loss plateaus aren't your metabolism's fault—they're caused by measurement errors or small invisible habits.

1. Underestimating calories eaten

Lichtman et al. 1992 showed that people who claimed they couldn't lose weight underestimated their intake by an average of 47%. Weigh your oils, sauces, and snack bites. A tablespoon of oil eyeballed is 200 hidden extra kcal.

2. Forgetting about weekends

5 days of a 500 kcal deficit + 2 days at maintenance + 500 = +1000 = net balance −1500 kcal/week. That's barely 200 g of fat. If you go 1000 kcal/day over on the weekend, you wipe out the whole week.

3. Not enough protein

Without at least 1.6 g/kg, you lose muscle. Your metabolism drops, you end up looking 'skinny-fat,' and you rebound as soon as you leave the deficit.

4. Too much cardio and not enough strength training

Cardio alone makes you smaller but not better built. Prioritize 3-4 strength sessions and add cardio if you want more calorie room.

5. Weighing yourself wrong

Weigh yourself every morning fasted, naked, after urinating. Track your weekly moving average, not a single reading. Pizza the night before can bump you up 1.5 kg from water and carbs.

6. Not adjusting after 4-6 weeks

Your TDEE drops as you lose weight. If you keep calories fixed and stop making progress, cut 100-200 kcal or increase activity.

7. Sleeping 5 hours

Less than 6 hours of sleep is linked to about 300 extra kcal eaten the next day, more ghrelin, less leptin, and worse recovery. Sleeping poorly is like training with the handbrake on.