You need to eat in a 300-500 calorie deficit below your maintenance level and consume around 1 gram of protein per pound of your target body weight. For a 140-pound woman, this means eating around 1,700 calories, not the 1,200 you see in magazines. That extreme deficit is why you feel tired, lose muscle, and rebound the moment you stop.
You’ve probably tried this before. You find a generic meal plan online, follow it perfectly for five days, feel miserable and hungry, and then give up. The problem isn't your willpower; it's the plan. Most cutting diets are designed for competitive bodybuilders or are so restrictive they're impossible to follow for more than a week. They demand you eat bland chicken and broccoli six times a day and cut out every food you enjoy. That approach fails 99% of the time because it ignores real life.
A successful cut isn't about starvation. It's a strategic, moderate reduction in calories designed to burn fat while preserving the muscle you've worked to build. Without enough calories and protein, your body doesn't just burn fat; it burns muscle tissue for energy. This lowers your metabolism, making it even harder to lose fat in the future. The goal isn't just to lose weight; it's to change your body composition. This requires a smarter approach than simply eating as little as possible.
Fat loss is a game of energy balance. To lose fat, you must consume fewer calories than your body burns. This is non-negotiable. Your Total Daily Energy Expenditure (TDEE), or maintenance calories, is the amount of energy you burn each day just by living. We're going to calculate this, then subtract a small amount to create a deficit that is effective but sustainable.
Your TDEE is made of four parts:
Instead of a complicated formula, here's a reliable shortcut to find your estimated maintenance calories:
Your Bodyweight (in lbs) x 15 = Your Estimated Daily Maintenance Calories
Let's use a 140-pound woman as an example:
This 2,100 is her maintenance level. To lose fat without losing muscle or sanity, she needs to create a deficit of 300-500 calories per day.
This moderate deficit will result in a loss of about 0.5 to 1 pound per week. A faster rate of loss almost always includes significant muscle loss, which is the opposite of what you want. The #1 mistake people make is creating a 1,000+ calorie deficit. It works for a week, then your body fights back by slowing your metabolism and increasing hunger hormones, leading to an inevitable rebound.
A plan is useless if you can't stick to it. This isn't a rigid list of foods you must eat. It's a flexible template that teaches you how to build meals that fit your calorie and macronutrient targets. You get to choose the foods you enjoy.
First, we'll set your calorie and macronutrient goals. Macros-protein, carbs, and fat-are the building blocks of your diet. Getting the right balance is critical for a successful cut. We'll continue with our 140-pound female example whose cutting calories are 1,700.
Your Daily Targets for a 140lb Woman:
Instead of a rigid meal plan, think in terms of "blocks." Aim for 3-4 meals per day, each containing a protein source, a carb source, and a fat source. This structure ensures you hit your macro targets without needing a spreadsheet for every meal.
For each meal, pick one item from each category:
Here’s how our 140-pound woman could use the block method to build a full day of eating. Notice how the foods are normal and easy to find.
Daily Grand Totals:
This sample day gets you very close to the goal. You can easily add another small carb or protein source to hit the final numbers precisely. The key is flexibility. If you don't like salmon, swap it for lean steak. If you're tired of quinoa, have rice. As long as you stick to your blocks and total numbers, you will make progress.
Progress isn't a straight line down. Your body weight fluctuates daily due to water, salt intake, and hormones. Understanding the timeline will keep you from making panicked decisions.
Week 1: Expect a weight drop of 2-4 pounds. Most of this is water weight lost as your body uses stored glycogen. This is a one-time event. Do not expect this rate of loss to continue. You will also feel a bit hungrier as your body adjusts to the new calorie level. This is normal and will subside.
Weeks 2-4: This is where true fat loss begins. The scale should move down by 0.5 to 1 pound per week. If you are lifting weights, you may be building a small amount of muscle while losing fat, so the scale might not move as fast as you'd like. This is why you must take progress photos and body measurements (waist, hips) every 2 weeks. They often tell a more accurate story than the scale.
When to Make an Adjustment: Do not change anything for at least two full weeks. If after 14 days of consistent tracking your weight has not budged at all, it's time for a small adjustment. Reduce your daily calories by another 100-150, taking them from either your carb or fat allowance. Do not cut protein. For our 140lb example, she would drop from 1,700 to 1,550-1,600 calories.
Warning Signs Your Deficit is Too Large:
If you experience these, your deficit is too aggressive. Add 100-200 calories back into your daily plan, primarily from carbohydrates, and assess how you feel after a week.
A planned, single high-calorie meal once per week can improve long-term adherence. It's a mental break. However, a full "cheat day" can easily undo an entire week's 3,500-calorie deficit. Stick to the 90/10 rule: if 90% of your meals are on plan, one meal off-plan will not stop your progress.
In the week leading up to your period, hormonal shifts cause water retention and increased cravings. The scale will likely go up by 2-5 pounds. This is water, not fat. Do not panic and slash your calories. Stick to the plan as best you can, and trust that the water weight will disappear a few days into your cycle.
Supplements are not necessary, but two can help. A whey or plant-based protein powder is a convenient way to hit your protein target. Creatine monohydrate (3-5 grams daily) helps you maintain strength and performance in the gym while in a calorie deficit. Fat burners are almost always a waste of money; your diet does 99% of the work.
Diet is the primary driver of fat loss. Cardio is a tool to increase your calorie deficit without having to eat less. Start with 2-3 sessions of 20-30 minutes of low-intensity steady-state (LISS) cardio per week, like walking on an incline or using the elliptical. This is enough to burn extra calories without making you excessively hungry.
A true plateau is when your weight and measurements have not changed for 2-3 consecutive weeks despite perfect adherence. First, double-check your tracking to ensure you're not accidentally eating more than you think. If your tracking is accurate, your two options are to either decrease daily calories by 100-150 or increase your activity, perhaps by adding one more cardio session.
All content and media on Mofilo is created and published for informational purposes only. It is not intended to be a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or other qualified health provider with any questions you may have regarding a medical condition, including but not limited to eating disorders, nutritional deficiencies, injuries, or any other health concerns. If you think you may have a medical emergency or are experiencing symptoms of any health condition, call your doctor or emergency services immediately.