A successful cut comes down to eating enough protein to protect your muscle, keeping calories low enough to lose fat, and choosing foods that actually keep you full along the way. The general target is a deficit of about 500 calories per day below your maintenance level, which translates to roughly 0.5 to 1 pound of fat loss per week. That pace is slow enough to preserve muscle and fast enough to see real progress within a few months.
But the calorie number alone doesn’t tell you much. What makes or breaks a cut is how you fill those calories. Here’s how to build a cutting diet that works.
Protein Is the Foundation
Protein does more work during a cut than at any other time. It preserves lean mass, keeps you full longer than carbs or fat, and has a higher thermic effect, meaning your body burns more calories just digesting it. The current recommendation for athletes losing weight is 1.6 to 2.4 grams of protein per kilogram of body weight per day. For a 180-pound (82 kg) person, that’s roughly 130 to 195 grams daily.
If you’re newer to lifting or carrying more body fat, the lower end of that range is usually sufficient. If you’re already lean and trying to get leaner, aim closer to the top. The leaner you are, the harder your body fights to break down muscle for energy, and more protein helps counteract that.
The best sources are foods that pack a lot of protein without too many extra calories: chicken breast, white fish, shrimp, lean cuts of beef or pork, egg whites, low-fat Greek yogurt, cottage cheese, and legumes like lentils and black beans. These give you the most protein per calorie, which matters when every calorie counts.
How to Spread Protein Across the Day
Total daily protein matters most, but distribution matters too. Your body can only use so much protein at once to build and repair muscle. Triggering that repair process requires a meal with roughly 30 to 35 grams of high-quality protein, which supplies about 3 grams of leucine, the amino acid that flips the switch on muscle building. Once activated, that elevated muscle-building state lasts about 2 to 2.5 hours before it resets.
A study comparing women eating 90 grams of protein per day found a meaningful difference based on how they split it up. When protein was distributed evenly (30 grams at each of three meals), 24-hour muscle protein synthesis was significantly higher than when the same 90 grams was loaded into one large dinner with smaller meals earlier in the day. The practical takeaway: aim for at least three protein-rich meals, each containing 30 or more grams. If you eat four meals, you can spread it thinner per meal, but try not to let any single meal drop below 20 grams.
Carbs: How Low You Can Go
Carbs are the most flexible part of a cutting diet, and there’s good news for people who don’t want to eat plain rice all day. For resistance training sessions of up to 10 sets per muscle group, carbohydrate intake alone is unlikely to affect your performance, as long as you’ve eaten something beforehand. A typical gym session won’t deplete your glycogen stores enough to impair strength, and those stores can refill within 24 hours even on a lower-carb diet.
Where carbs become more important is if you’re training the same muscle group twice in one day or doing very high-volume sessions (11 or more sets per muscle group). In that case, higher carb intake helps replenish glycogen between sessions. A practical minimum around your workouts is at least 15 grams of carbs paired with protein within three hours of training.
For most people on a cut, carbs will land somewhere between 1.5 and 3 grams per kilogram of body weight, depending on how many calories you have to work with after protein and fats are accounted for. Prioritize carbs around your training window and at meals where you need the energy most.
Don’t Cut Fat Too Low
Dietary fat is essential for hormone production, including testosterone, which plays a direct role in muscle retention. Dropping fat intake below about 20% of your total calories can start to interfere with hormonal health, mood, and energy. For someone eating 2,000 calories on a cut, that means at least 44 grams of fat per day.
Focus on sources that do double duty: eggs (whole, not just whites, for at least some of your daily intake), avocado, olive oil, nuts, seeds, and fatty fish like salmon. Fatty fish also provides omega-3s, which support recovery and may help with the low-grade inflammation that comes with hard training in a deficit.
Foods That Keep You Full on Fewer Calories
Hunger is the main reason cuts fail. The most effective strategy is eating foods with high volume but low calorie density, so you physically feel full without overshooting your targets. Fruits and vegetables are the obvious winners here because they’re mostly water and fiber. Half a grapefruit is about 90% water and has just 64 calories. A large bowl of broccoli, zucchini, or salad greens adds serious bulk to a meal for almost nothing.
Some of the best high-volume foods to build meals around:
- Vegetables: broccoli, zucchini, asparagus, carrots, tomatoes, spinach, cauliflower, bell peppers
- Fruits: berries, watermelon, grapefruit, apples, oranges
- Lean proteins: chicken breast, white fish, shrimp, egg whites, low-fat cottage cheese, fat-free Greek yogurt
- Legumes: lentils, black beans, chickpeas (high in both protein and fiber)
- Whole grains: air-popped popcorn (about 30 calories per cup), oats, potatoes (technically a starch, but very filling per calorie)
Building meals with a base of vegetables, a large portion of lean protein, and a moderate serving of starchy carbs is the simplest formula. Think: a big plate of stir-fried vegetables with chicken over a smaller portion of rice, or a massive salad with shrimp and beans.
Fiber and Why It Matters More on a Cut
Fiber slows digestion, stabilizes blood sugar, and physically stretches your stomach, all of which reduce hunger between meals. Aim for at least 20 grams per day as a baseline, though 25 to 35 grams is a better target if your gut tolerates it. Vegetables, fruits, legumes, and whole grains all contribute. If your current diet is low in fiber, increase gradually to avoid bloating.
Refeed Days and Why Carbs Matter for Them
After several weeks in a deficit, your body starts to adapt. A hormone called leptin, produced by fat cells, begins to decline. Leptin normally signals your brain that energy stores are adequate, encouraging calorie burning and keeping appetite in check. When leptin drops, your body shifts into conservation mode: appetite goes up, energy expenditure goes down. This process, called adaptive thermogenesis, is your body actively slowing weight loss to protect itself.
A refeed day, where you temporarily increase calories back to maintenance or slightly above, can help. The key is that carbohydrates raise leptin levels more effectively than protein or fat. A well-structured refeed day means eating at or near maintenance calories with the extra calories coming primarily from carbs: rice, pasta, bread, oats, potatoes, fruit. This isn’t a free-for-all cheat day. It’s a deliberate, carb-focused bump in calories, typically once every one to two weeks, designed to give your metabolism a brief signal that the famine is over.
Refeeds also have a psychological benefit. Knowing a higher-calorie day is coming makes the lower days easier to stick with, and adherence is ultimately what determines whether a cut succeeds.
A Simple Cutting Day Looks Like This
You don’t need complicated meal plans. A cutting day for a 180-pound lifter eating around 2,000 calories might look like: three to four meals, each with 35 to 50 grams of protein, a large serving of vegetables or fruit, a moderate portion of starchy carbs concentrated around training, and a small amount of healthy fat. That could be eggs and oats in the morning, a chicken and vegetable bowl at lunch, Greek yogurt with berries as a snack, and fish with potatoes and a big salad at dinner.
The specifics matter less than the principles. Hit your protein target. Eat plenty of vegetables. Get enough fat to keep hormones healthy. Fill your remaining calories with carbs, and put most of those carbs near your workouts. Lose weight at a steady 0.5 to 1 pound per week, and you’ll keep the muscle you worked for.