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LEAN BULK

How to lean bulk without cut and bulk cycles

You do not need cut and bulk cycles to build muscle: train normally all year and eat around the training. Eat at about maintenance (the amount that keeps your weight steady) or a small surplus (a little more food than you burn), get enough protein, and put more carbohydrate on hard training days than on rest days, which is called carb cycling. A sustained surplus may help maximize muscle gain, but the sources cited here do not measure the speed trade-off directly, and an aggressive surplus can add unnecessary body fat.

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What a lean bulk is, and what cut and bulk cycles are

A bulk means eating more than you burn on purpose to gain weight, mostly as muscle. A cut means eating less than you burn to lose body fat. Many lifters alternate: some months of bulk, then some months of cut, then again. A lean bulk is a bulk with a small surplus, the amount you eat above what you burn, to limit how much of the gain is body fat.

Our view is that you do not need the cycle. Train normally all year and keep your food close to what you burn. Lift on your hard days, fuel those days, and keep protein steady every day.

Body recomposition is the name for what that looks like: reducing body fat while maintaining or increasing lean mass (everything in your body that is not fat, muscle included), often with no change in total body weight. A 2024 editorial in Frontiers in Nutrition says it has been demonstrated in untrained, trained and highly trained people of different ages.

How much to eat

Maintenance is the amount of food that keeps your weight steady. A 2019 review in Frontiers in Nutrition says the specific energy surplus required to facilitate muscle hypertrophy (muscle growth) is unknown, and advises starting conservatively, within about 1,500 to 2,000 kilojoules a day above maintenance (about 360 to 480 kcal, short for kilocalories, the unit on food labels), and closely monitoring how your body responds.

A 2019 review for natural bodybuilders (drug-free lifters) in the off-season (the months between competitions) puts the surplus at about 10 to 20 percent above maintenance, with a target weight gain of about 0.25 to 0.5 percent of body weight per week for novice and intermediate bodybuilders. It says advanced bodybuilders should be more conservative with both the surplus and the weekly weight gain, and its table gives 5 to 10 percent above maintenance and about 0.25 percent a week for them.

Aragon and colleagues say larger surpluses suit untrained people, and smaller surpluses suit more advanced trainees, who may be at higher risk of gaining unwanted fat under an aggressive surplus. They also note that not everyone fits that pattern.

The review for bodybuilders gives the reason a big surplus costs you: because the ability to gain muscle mass is limited, an aggressive surplus can result in an unnecessary gain of body fat. You then have to remove that fat in the next cut.

Weigh yourself a few mornings a week and watch the weekly average. If your weight rises faster than the range above, eat a little less. If it does not move for several weeks, eat a little more.

If you have a medical condition, or a history of disordered eating, talk to a doctor or dietitian before you change how you eat or start counting what you eat.

What the research does not settle

A sustained surplus is the likely best way to optimize muscle gain. Aragon and colleagues write that diets focused on gaining lean mass are likely optimized via a sustained caloric surplus to facilitate anabolic (tissue-building) processes and support increasing training demands. So a lean bulk is a choice to accept a smaller surplus, and possibly slower gains, in return for less body fat to remove later. No source we cite measures that trade directly.

Muscle can also grow without a surplus. Slater and colleagues write that skeletal muscle hypertrophy is possible in an energy deficit, and that this response may be more likely among people who are new to resistance training, overweight or obese. For an advanced lifter, none of the sources we cite says that maintenance builds muscle as fast as a surplus does, and the review for bodybuilders notes that rates of muscle growth may slow as a person becomes more advanced.

These studies cover specific groups: bodybuilders, athletes and short trials. Read the numbers as ranges to start from, not as targets, and adjust them using your own weekly weight and your lifts.

How much protein

Your body builds muscle from protein. The International Society of Sports Nutrition (ISSN) position stand says that for building muscle mass and for maintaining it, an overall daily protein intake in the range of 1.4 to 2.0 grams of protein per kilogram of body weight per day (g/kg/d) is sufficient for most exercising individuals. Multiply your weight in kilograms by 1.4 and by 2.0 to get your range.

Eat the same protein on rest days as on training days.

Carb cycling: fuel for the work

Carbohydrate (carbs) is the fuel your body uses for hard training. Carb cycling means eating more of it on days when you train hard and less on days when you rest or train lightly. Sports nutrition research describes a related idea as carbohydrate periodization, planning carbohydrate across days the way you plan training, so that availability matches the demands of the upcoming session.

The Academy of Nutrition and Dietetics, Dietitians of Canada and the American College of Sports Medicine give carbohydrate targets by training load for athletes: 3 to 5 grams per kilogram of body weight per day for light activity (low intensity or skill-based activities), and 5 to 7 g/kg/d for a moderate exercise program (for example, about 1 hour a day). Higher tiers exist for endurance athletes. They say the targets are meant for situations where it is important to exercise with high quality or at high intensity, that on other occasions it may be less important to reach them, and that these general targets should be fine-tuned with individual consideration of total energy needs, specific training needs and feedback from training performance.

Our reading for a lifter is the moderate tier on the days you lift and the light tier on rest days. That is our mapping of those tiers onto days, not a protocol anyone has tested on lifters. Hold your weekly food at maintenance or a small surplus, and let the carbohydrate move between days.

For days without a key session, the same position paper says that, as long as total fuel needs are provided, the pattern of intake may simply be guided by convenience and individual choice. That leaves room for carb cycling: you put the carbohydrate on the days you do the hard work.

Carb cycling does not build muscle on its own. The research behind matching carbohydrate to the work is a 2018 theoretical framework in Sports Medicine about endurance training, and it does not test muscle growth in lifters. Aragon and colleagues write that a wide range of dietary approaches, from low-fat to low-carbohydrate, can be similarly effective for improving body composition. The reason to put carbs on hard days is to train well on them.

A week you can use without an app

The World Health Organization (WHO) guidelines for adults include muscle-strengthening activities that work all major muscle groups on 2 or more days a week. This week uses three full-body strength days and keeps everything else easy.

Protein stays at 1.4 to 2.0 g/kg/d on every day. The carbohydrate column uses the tiers above and is our reading, not a tested protocol.

DayTrainingCarbohydrate that day
MondayFull-body strength (the session below)Moderate tier: 5 to 7 g/kg/d
TuesdayEasy cardio or a walkLight tier: 3 to 5 g/kg/d
WednesdayFull-body strengthModerate tier: 5 to 7 g/kg/d
ThursdayRestLight tier: 3 to 5 g/kg/d
FridayFull-body strengthModerate tier: 5 to 7 g/kg/d
SaturdayEasy cardio, a walk or a sport you play for funLight tier: 3 to 5 g/kg/d
SundayRestLight tier: 3 to 5 g/kg/d

One strength session to copy

To failure means you stop a set when you cannot finish another rep with good form. Use a spotter (a person who stands by to help if a rep stalls) or the safety bars on squats and bench press. A ramp set is a lighter set that builds up to your working weight. A superset is two moves done back to back. Effort is out of 10, where 10 is all you have. The session takes about 60 minutes.

If you are a beginner, two working sets is the whole session. Load so that 5 to 6 reps is the ceiling. In your first weeks, stop every working set one or two reps short of failure, and squat and bench press in a rack with the safety bars set. Swap the barbell Romanian deadlift for a dumbbell version if the setup is awkward.

BlockWhat you do
Warm-upAssault Bike (a stationary air bike): 5 minutes at effort 4 out of 10, an easy ramp until your legs and lungs are awake. World’s Greatest Stretch (a lunge that twists to open the hips): 1 set of 5 per side. Back Squat: 2 ramp sets of 5, one or two sets that build to your working weight, to groove the pattern with no fatigue.
MainBack Squat: 2 sets of 5, 3 minutes rest, to failure by about 5 reps. Sit between your hips and drive the floor away. Bench Press: 2 sets of 6, 3 minutes rest, to failure. Bar to the sternum, shoulder blades pinned. When you clear 6 clean reps, add load next time.
AccessorySuperset, 2 rounds, 90 seconds rest between rounds. Romanian Deadlift (push your hips back with the bar in your hands until your hamstrings cannot take another rep): 8 reps, to failure. Barbell Row (pull to the belt line): 8 reps, to failure.
FinisherLandmine Twist (swing a barbell anchored at one end from hip to hip, driven from your trunk): 3 sets of 10 per side, 60 seconds rest, to failure. Sled Push: 2 sets of 12 metres, 60 seconds rest, with a heavy sled loaded so each 12 metres is hard, low hips, driving through your legs.

Where Complete fits

Complete starts from your long-term goals, not a plan. You pick from six goals: build muscle, lose fat, improve cardio, get stronger, general health, or become an athlete. They steer what Complete recommends every day, and the aim under every goal is more good years.

Train your own way and it counts. Every workout that reaches Apple Health, from any watch that writes to it, earns points toward your score, which is how you rank against your friends, and feeds the recommendation for the next day. You can also log a gym session set by set in the app, and you can record your lifts on Roads, Complete’s ladders of targets, and see where your friends are on them. Complete reads your goals, your recovery and your recent training and tells you what to do today, with or without a plan.

Complete is free to download, and logging and sharing your workouts on it stay free.

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Frequently asked questions

Do I need to cut and bulk?

No. Body recomposition, reducing body fat while maintaining or increasing lean mass, has been demonstrated in untrained, trained and highly trained people. The trade is speed: a surplus is likely the best way to add muscle, and smaller surpluses suit advanced lifters because an aggressive one can add unnecessary body fat.

How do I lean bulk?

Train normally, eat close to maintenance or a small surplus, get 1.4 to 2.0 grams of protein per kilogram of body weight per day, and weigh yourself weekly. One review of natural bodybuilders puts the surplus at about 10 to 20 percent above maintenance, with a more conservative surplus for advanced lifters.

What is carb cycling?

Carb cycling means eating more carbohydrate on days when you train hard and less on rest or light days. Sports nutrition research calls the idea carbohydrate periodization: matching carbohydrate to the demands of the upcoming session.

Does carb cycling build muscle?

Not on its own. It matches fuel to training so your hard sessions go well. The research we cite on it is a theoretical framework about endurance training and does not test muscle growth in lifters.

Can I build muscle at maintenance?

Possibly. Slater and colleagues write that muscle growth is possible even in an energy deficit, and that it may be more likely among people who are new to resistance training, overweight or obese. For an advanced lifter, none of the sources we cite says maintenance builds muscle as fast as a surplus does.

How much protein do I need to lean bulk?

The ISSN position stand puts it at 1.4 to 2.0 grams per kilogram of body weight per day for most exercising people. Eat the same amount on rest days and training days.

Can I use Complete while I lean bulk?

Yes. Complete starts from your goals, such as build muscle or get stronger. Workouts that reach Apple Health count, you can log gym sessions set by set, and Complete recommends what to do each day from your goals, your recovery and your recent training.

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By Paul Schmidt, founder of Complete · Last reviewed 18 Oct 2026

Lean bulk without cut and bulk cycles | Complete