Lowering your body fat percentage comes down to losing fat while holding onto as much muscle as possible. That distinction matters because simply losing weight on a scale can mean losing muscle too, which actually makes your body fat percentage worse. A realistic target is 1% to 3% of body fat lost per month, and the process involves coordinating your eating, exercise, sleep, and daily movement.
For reference, a 2025 study defined “overweight” as a body fat percentage of at least 25% for men and 36% for women, with obesity starting at 30% for men and 42% for women. There’s no single universally agreed-upon ideal, and body fat naturally increases with age, but those thresholds give you a rough sense of where the health risks climb.
Eat in a Moderate Calorie Deficit
You need to eat fewer calories than your body burns, but the size of that gap matters. Cutting roughly 500 calories per day from your usual intake typically produces about half a pound to one pound of weight loss per week. That pace sounds slow, but aggressive deficits strip away muscle along with fat, and muscle is what keeps your metabolism running efficiently. Losing muscle is one of the primary reasons people hit plateaus: their body simply burns fewer calories at rest than it used to.
Start by estimating your total daily energy expenditure using an online calculator, then subtract 300 to 500 calories. Track what you eat for at least a couple of weeks so you can see your actual intake rather than guessing. If you’re losing more than about two pounds a week consistently, you’re likely cutting too hard and sacrificing muscle in the process.
Prioritize Protein at Every Meal
Protein is the single most important macronutrient for changing your body composition. It provides the raw material your muscles need to recover from exercise, and it keeps you full longer than carbohydrates or fats do. The baseline recommendation for adults is 0.8 grams of protein per kilogram of body weight, but that number is designed to prevent deficiency, not optimize fat loss. Active individuals benefit from 1.2 to 1.5 grams per kilogram, and some research supports going even higher during a calorie deficit.
For a 170-pound (77 kg) person, that translates to roughly 92 to 115 grams of protein per day. Spreading it across three or four meals rather than loading it all into dinner helps your body use it more efficiently for muscle repair. Good sources include poultry, fish, eggs, Greek yogurt, legumes, and tofu.
Eat More Fiber for Fullness
A study published in the Annals of Internal Medicine found that people who simply aimed to eat 30 grams of fiber per day lost weight, lowered their blood pressure, and improved their insulin response, even without following any other dietary rules. Fiber slows digestion, keeps blood sugar steadier, and makes meals feel more satisfying for longer. Most people eat about half the recommended amount.
Vegetables, fruits, beans, lentils, oats, and whole grains are the easiest ways to close that gap. Adding a serving of beans to lunch and an extra portion of vegetables at dinner can get you most of the way there without overhauling your entire diet.
Combine Strength Training and Cardio
A large meta-analysis comparing aerobic exercise to resistance training in adults found that cardio was better at reducing total body mass, while resistance training was significantly better at building and preserving lean body mass. Both matter for body fat percentage, but if you had to pick one, strength training has a slight edge because it protects the muscle that keeps your metabolism high and directly improves the ratio of fat to lean tissue.
The ideal approach is doing both. Two to four sessions of resistance training per week (hitting each major muscle group at least twice) combined with two to three sessions of moderate cardio gives you the fat-burning benefits of aerobic work without sacrificing muscle. If you’re new to lifting, even bodyweight exercises like squats, push-ups, and rows will produce noticeable changes in the first few months.
Progressive overload is key. Your muscles need a reason to stick around during a calorie deficit. If you’re lifting the same weights for the same reps month after month, you’re not giving them that reason. Increase the weight, reps, or sets over time, even in small increments.
Move More Outside the Gym
The calories you burn through everyday movement, everything from walking to the store to fidgeting at your desk to doing laundry, add up substantially over the course of a day. This non-exercise activity varies enormously between people and can be the difference between a meaningful calorie deficit and barely any deficit at all. Research using activity monitors has shown that people who stand and move more throughout the day gain less weight over time, independent of whether they exercise.
Practical ways to increase this include walking after meals, taking stairs, standing while on phone calls, parking farther away, and doing household chores more often. Aiming for 8,000 to 10,000 steps daily is a simple benchmark that most people can track with a phone.
Sleep Enough to Control Hunger Hormones
Sleep deprivation directly sabotages fat loss by changing the hormones that regulate your appetite. A Stanford study found that people who consistently slept five hours a night had a 14.9% increase in ghrelin (the hormone that triggers hunger) and a 15.5% decrease in leptin (the hormone that signals fullness) compared to people sleeping eight hours. That hormonal shift makes you hungrier, less satisfied after eating, and more likely to overeat, particularly high-calorie foods.
Seven to nine hours of sleep per night is the range that keeps these hormones in balance. If you’re doing everything else right but sleeping poorly, you’re fighting your own biology.
Use Diet Breaks to Avoid Plateaus
Extended periods of calorie restriction cause your body to adapt by burning fewer calories, a process sometimes called metabolic adaptation. Planned diet breaks, where you eat at maintenance calories for one to two weeks, can help counteract this slowdown. They also provide psychological relief, which makes the overall process more sustainable.
A common structure is three weeks of deficit followed by one week at maintenance. If you’re not on a strict timeline, you can take breaks as needed, whether that’s when progress stalls, when life gets stressful, or when you simply feel worn down. The key is that a diet break is intentional, returning to maintenance calories rather than overeating, so you don’t erase your progress.
Track Your Progress Accurately
The bathroom scale only tells you total weight, not what that weight is made of. To actually know if your body fat percentage is changing, you need a method that distinguishes fat from lean tissue. DEXA scans are widely considered the gold standard for accessible body composition testing, though they still have meaningful error margins. Bioelectrical impedance scales (the kind you can buy for home use) show considerably wider variation when compared against more precise methods, so they’re better for tracking trends over time than for getting an exact number on any given day.
If you don’t want to pay for scans, tracking waist circumference with a tape measure, progress photos taken under consistent lighting, and how your clothes fit are surprisingly useful indicators. Measure at the same time of day under the same conditions, and look at the trend over weeks rather than obsessing over daily fluctuations. A realistic expectation is 1% to 3% body fat lost per month, so meaningful visual changes take at least four to six weeks to become obvious.