Lowering your body fat percentage comes down to a sustained caloric deficit, enough protein to protect your muscle, and strength training to signal your body to keep lean tissue while burning stored fat. There’s no shortcut or single trick, but the process is well understood and predictable when you get the fundamentals right.
What Body Fat Percentages Actually Mean
There’s no universally agreed-upon “ideal” body fat percentage, which surprises a lot of people. But a large 2025 study of adults ages 18 to 85 offers useful benchmarks: it defined overweight as 25% body fat or higher for men and 36% or higher for women, with obesity starting at 30% for men and 42% for women. Women naturally carry more essential fat for reproductive and hormonal functions, so the ranges differ significantly between sexes.
If you’re trying to get leaner for health reasons, pushing below the overweight threshold is a reasonable target. If you’re chasing a more athletic look, men typically aim for the 12 to 20% range and women for the 20 to 30% range, though individual goals vary widely.
Create a Moderate Caloric Deficit
Your body stores excess energy as fat and draws on those stores when you eat less than you burn. To lose roughly 1 to 1.5 pounds per week, aim to cut 500 to 750 calories per day from what you currently eat. That deficit can come from eating less, moving more, or a combination of both.
Cutting more aggressively feels tempting, but larger deficits make it harder to hold onto muscle, and muscle is exactly what keeps your body fat percentage low. A moderate deficit gives you enough energy to train hard and recover while steadily chipping away at stored fat. Unlike body weight, where losing more than two pounds per week is generally discouraged, there are no formal guidelines for how fast body fat percentage should drop, simply because individual variation is enormous. A steady, patient approach works better than a crash diet for almost everyone.
Eat Enough Protein
Protein is the most important macronutrient for changing your body composition. When you’re in a caloric deficit, your body doesn’t just burn fat. It can also break down muscle for energy. High protein intake sends a strong signal to preserve that muscle tissue, especially when combined with resistance training.
For people who exercise regularly, the recommendation is at least 1.2 grams of protein per kilogram of body weight per day, and ideally above that. For a 180-pound (82 kg) person, that translates to roughly 100 grams of protein daily as a floor, with many researchers and coaches suggesting even more. If you’re sedentary, the baseline recommendation is 0.8 grams per kilogram, but bumping that up still helps when you’re actively trying to lose fat.
Spreading protein across meals rather than loading it into one sitting improves how well your body uses it. Chicken, fish, eggs, Greek yogurt, legumes, and protein supplements all work. The source matters less than hitting your daily total consistently.
Prioritize Strength Training
Cardio burns calories during the session, but resistance training changes your body composition in a way cardio alone cannot. Lifting weights, using machines, or doing challenging bodyweight exercises tells your muscles they’re needed. In a caloric deficit, that signal is critical. Without it, your body is more likely to sacrifice muscle along with fat, and you end up lighter on the scale but not much leaner in terms of percentage.
Two to four strength sessions per week covering all major muscle groups is the range most people benefit from. Progressive overload, gradually increasing the weight or reps over time, keeps that muscle-preserving signal strong. You don’t need to live in the gym, but you do need to challenge your muscles consistently.
Move More Outside the Gym
The calories you burn through everyday movement (walking, standing, fidgeting, taking the stairs) can vary by up to 2,000 calories per day between people of similar size. This non-exercise activity is a surprisingly large lever for fat loss. Simply increasing the time you spend standing and walking by about 2.5 hours per day can burn an extra 350 calories, roughly the equivalent of a 30-minute jog, without any formal workout.
Small changes add up: parking farther away, taking calls while walking, using a standing desk for part of the day, or doing household chores more frequently. These aren’t dramatic shifts, but over weeks and months they meaningfully increase your total energy expenditure without the fatigue or hunger that comes from longer gym sessions.
Sleep Changes Your Hormones
Consistently sleeping less than seven hours per night is associated with a 38% increase in obesity risk, and the mechanism is hormonal. Sleep deprivation raises ghrelin (your hunger hormone) and suppresses leptin (the hormone that tells you you’re full), leaving you in a state of near-constant appetite. It also disrupts cortisol patterns, keeping levels elevated through the day instead of just the morning. Sustained high cortisol promotes insulin spikes that encourage fat storage, particularly around the midsection.
You can have your diet and training perfectly dialed in, but chronic poor sleep will work against you at the hormonal level. Seven to nine hours per night in a consistent pattern is one of the highest-impact changes you can make for fat loss, and it costs nothing.
Expect Fat Loss to Slow Down
As you lose weight, your body adapts by burning fewer calories than predicted. This metabolic adaptation is real and measurable: the more weight you lose, the more your metabolism slows beyond what your smaller body size alone would explain. It’s the main reason the last few pounds feel dramatically harder than the first few.
The good news is that this adaptation isn’t permanent. After just a couple of weeks at a stable weight, metabolic rate recovers significantly or even fully. This is why planned diet breaks, periods of eating at maintenance calories for one to two weeks, can actually help long-term fat loss. They reduce the metabolic slowdown, relieve psychological fatigue, and set you up for another productive phase of deficit eating.
How to Track Your Progress
Body fat percentage is harder to measure accurately than most people realize. DEXA scans, which use low-dose X-rays, are considered the clinical standard. Bioelectrical impedance scales (the kind you step on at home or at the gym) correlate well with DEXA overall, but they tend to underestimate fat mass by about 1.8 kg and overestimate lean mass by about 2.5 kg. That means your home scale may tell you you’re leaner than you actually are.
The most practical approach is to use the same method every time, under the same conditions. Weigh yourself on your home scale first thing in the morning, after using the bathroom, before eating or drinking. The absolute number may be off, but the trend over weeks will be reliable. Combine that with progress photos, how your clothes fit, and strength in the gym. If all of those are moving in the right direction, your body fat percentage is dropping regardless of what any single measurement says.
Putting It All Together
Fat loss that actually lasts isn’t about any single tactic. It’s a handful of fundamentals applied consistently: a moderate caloric deficit of 500 to 750 calories per day, protein intake above 1.2 grams per kilogram, regular strength training, more daily movement, and seven-plus hours of sleep. None of these are complicated, but doing all of them at once is what separates people who lower their body fat percentage and keep it there from those who yo-yo between diets.
Plan for the process to take months, not weeks. Build in maintenance breaks every 8 to 12 weeks to reset your metabolism and your mindset. Track trends rather than obsessing over daily fluctuations. The body you’re building during this process, one with more muscle and less fat, will be metabolically healthier and easier to maintain long after the active fat-loss phase ends.