Quick Answer
Most people lose weight by eating below their estimated daily energy needs, but the deficit should be controlled. A useful starting point is your TDEE minus a sensible deficit, while keeping protein high and calories away from extreme lows.
Key Point
Why Random Calorie Targets Usually Fail
A lot of people pick a number because they saw it online. 1,200 calories. 1,500 calories. Some random target from someone with a completely different body, job and routine.
That is exactly the sort of thing I used to do when I was around 120kg. I would go too aggressive, feel awful, then end up overeating because the plan was never realistic.
Your calorie target should be based on what you actually burn, not what sounds strict enough to work.
Start With Your Maintenance Calories
Maintenance calories are roughly the number of calories you need to stay the same weight. They are affected by your height, weight, age, gender, daily movement and training.
Once you have that estimate, weight loss comes from creating a deficit. The key is making the deficit large enough to matter but not so harsh that you quit.
- Body weight
- Height and age
- Daily activity
- Training days
- Consistency
- Goal speed
Do Not Ignore Activity Level
Two people can weigh the same and need very different calorie targets. Someone with an active job and regular gym sessions will usually burn more than someone sitting most of the day.
That is why the 8 Week Body Plan asks about activity level before estimating calories. It makes the number more useful and less of a blind guess.
Better vs Weaker Approach
Better Choice
A plan built around your real schedule
Meals you can repeat without hating them
Progress based on consistency
Weaker Choice
A plan that assumes perfect discipline
Bland food you quit after a week
Chasing a perfect week every week
Protein Makes The Diet Easier
Calories drive weight loss, but protein helps the plan feel more manageable. It supports muscle retention, helps meals feel more filling and makes the diet less chaotic.
That does not mean eating absurd amounts of protein. A realistic target is better than a perfect-looking target nobody wants to follow.
This is where a personalised plan helps. The useful number is not just calories on their own, it is calories with protein, meals and workouts that make the target feel possible.
Put It Into Practice
How To Use This In A Real Week
The useful version of this guide is the version you can still follow when life is busy, motivation is average and the day does not go exactly to plan.
Pick the two or three ideas that would remove the most friction for you this week. That might mean a simpler breakfast, a more realistic gym schedule, or a meal you can repeat without needing a full Sunday meal prep routine.
Progress usually comes from making the obvious next step easier to repeat. Use the guide for direction, then use your own calorie target, protein target, schedule and consistency to make it personal.
Example
Example Day Of Eating
Breakfast
High-protein breakfast built around your calories
Lunch
Simple meal-prep style option you can take to work
Dinner
Normal food with protein, carbs and sensible portions
Snack
Optional high-protein top-up if needed