Why Nutrition Is More Important Than Training
Many people enthusiastically start their training schedule but neglect their diet. The reality: you can cycle for an hour and burn calories, but one fast food meal undoes that loss. Nutrition typically accounts for about 60 to 70% of weight loss results.
A good personal trainer knows this and combines training with nutrition advice. For this, a certified nutrition coach is ideal — but trainers with basic nutrition training can also guide you in the right direction.
Calorie Deficit: The Foundation of Weight Loss
Weight loss works on one basic principle: you must eat fewer calories than you burn. This is called a calorie deficit. How big that deficit should be depends on the individual:
- Mild deficit (200–300 kcal/day): Slow but steady — ideal if you also want to keep muscle mass
- Moderate deficit (300–500 kcal/day): Good pace, 0.3 to 0.7 kg loss per week — this is the sweet spot
- Large deficit (500+ kcal/day): Fast results but risk of muscle loss and energy problems
A personal trainer calculates your TDEE (Total Daily Energy Expenditure) based on height, weight, age, gender, and activity level. Together you set the right calorie goal.
What Do You Eat When Losing Weight?
You don't have to avoid everything, but the distribution of macronutrients (protein, carbs, fats) plays a big role:
Protein is the most important nutrient for weight loss: it keeps you fuller longer, preserves muscle, and has the highest thermic effect (your body burns more energy digesting protein).
Sample Daily Menu for Weight Loss
Frequently Asked Questions
Direct een trainer boeken?
Download de Gymies app en vind gecertificeerde trainers bij jou in de buurt. Gratis, transparant en zonder verborgen kosten.
Op zoek naar een trainer?
Vergelijk tarieven en boek direct via de Gymies app.
Practical Tips for Tracking Calories
Tracking nutrition sounds complicated, but modern apps make it easy. MyFitnessPal and Cronometer let you track macros and calories. Your trainer can review this data to see if you have a real calorie deficit.
Alternatives: portion control (use your hand as a measure), balance method (25% protein, 50% vegetables, 25% carbs), or just eating healthy without counting. The latter works if you make healthy choices naturally.
Water, Caffeine, and Metabolism
Want to use nutrition smartly? Drink plenty of water (metabolism +3-4%), drink green tea (metabolism boost), and get enough caffeine (coffee/tea is fine). These "tricks" give you 5-10% extra calorie burn over time.