Maingaining-the art of building muscle and losing fat simultaneously-is the holy grail of fitness. It promises the best of both worlds without the extreme hunger of a cut or the unwanted fat gain of a bulk. But it's a precision game. You are maingaining correctly if your strength performance consistently improves, your body measurements trend positively, and your average body weight remains stable within a 1-2% range over four weeks. This process is about recomposition, not just weight maintenance. It works best for those new to lifting or returning after a long break.
The changes are slow and subtle. You will not see dramatic shifts on the scale week to week. Instead, progress is measured in kilograms on the bar and centimeters on a tape measure. If your lifts are going up and your waist is getting smaller, you are succeeding. Most people fail because they lack a reliable system for tracking these subtle changes. This guide provides that system.
Most people fail at maingaining because they obsess over the scale. Your body weight can fluctuate by 1-3% daily. This isn't fat gain or loss; it's noise. Factors like water retention from a high-sodium meal, glycogen storage after a carb-heavy day, stress-induced cortisol, and the physical weight of food in your system can cause the scale to swing wildly. These fluctuations hide the slow, real progress of building muscle and losing fat. Focusing on daily weight changes will lead you to make panicked, unnecessary adjustments to your diet.
The goal is to change your body's composition. Muscle is significantly denser than fat. This means that as you build a kilogram of muscle and lose a kilogram of fat, your body will look leaner and more toned, but the number on the scale might not budge at all. Your training logbook and a simple tape measure are the real arbiters of progress, not the device on your floor. If you are lifting more weight or doing more reps, you are building muscle. This is a non-negotiable sign of progress.
To get clear, unbiased feedback, you must consistently track three distinct pillars of progress. This system removes the guesswork and tells you definitively if your maingaining phase is working.
Your starting point for maintenance calories is your bodyweight in pounds multiplied by 15. For an 80kg (176lb) person, this is 176 x 15 = 2,640 calories per day. This is an estimate. You will adjust it based on how your weekly weight average trends. Set your protein intake to a minimum of 1.6 grams per kilogram of bodyweight. For an 80kg person, that is 80 x 1.6 = 128 grams of protein daily. This elevated protein intake is crucial for providing the building blocks for muscle repair and growth, especially when you are not in a significant calorie surplus.
Your strength in the gym is the single most important indicator of muscle growth. If you are getting stronger, you are building muscle. The mechanism for this is progressive overload, which means your total training volume must increase over time. Volume is calculated as sets x reps x weight. Here’s how to track it properly:
Progress is not always linear. You will have good and bad days. The goal is an upward *trend* over a 4-week period. If your logbook shows you are consistently lifting more weight or doing more reps on your main lifts over a month, you are successfully building muscle.
While the logbook shows performance, measurements and photos provide the visual proof of recomposition. This is how you confirm that you're losing fat, even when the scale is static.
How to Take Accurate Body Measurements:
How to Take Effective Progress Photos:
When you review, look for changes in your silhouette, increased muscle definition (e.g., in your shoulders or abs), and how your clothes fit. A decreasing waist measurement combined with stable or increasing chest and arm measurements is a classic sign of successful maingaining.
Manually tracking volume and calories in a spreadsheet works. If you want to save time, Mofilo auto-calculates your training volume and lets you log meals in seconds by scanning a barcode or searching its database of 2.8M verified foods.
Maingaining is a marathon, not a sprint. Do not expect rapid changes. For a beginner, realistic progress is adding about 2.5kg (5 lbs) to your main compound lifts each month. Your weekly average body weight should stay within a 0.5kg (1 lb) range. You might see your waist measurement decrease by 1-2 centimeters per month while other measurements hold steady or slightly increase.
Use your data to make small adjustments. If your weekly weight average is consistently dropping after two weeks and your strength is stalling, increase your daily calories by 100-150. If your weight average is consistently increasing and your waist measurement is going up, decrease your calories by 100-150. The goal is to find the calorie level that allows for steady strength gains with minimal change in body weight.
This approach has limits. It is most effective for beginners who can build muscle and lose fat efficiently. Advanced lifters will find it very slow. For them, dedicated bulking and cutting cycles often produce better results. Be honest about your training level to set the right expectations.
You can maingain for as long as you are seeing progress in both strength and body measurements. Many people use it for 4-6 months before deciding to switch to a dedicated bulk or cut for faster results.
If you are new to lifting or have a higher body fat percentage (over 15% for men, 25% for women), maingaining is a great start. If you are an experienced lifter who is already lean, traditional bulk and cut cycles will likely be more effective for adding significant muscle mass.
It is possible but extremely slow. An advanced lifter is close to their genetic potential, making it very difficult to build muscle without a significant calorie surplus. Progress may be so slow that it is hard to measure, making a dedicated bulk a more efficient choice for muscle gain.
After setting protein at 1.6-2.2g per kg of bodyweight, the rest of your calories can be divided between carbohydrates and fats based on your preference and what fuels your training best. A common starting point is to allocate 20-30% of total calories to fats and the remainder to carbs.
Cardio is excellent for cardiovascular health, but it is not a primary tool for maingaining. Your calorie intake should be set for maintenance. Performing excessive cardio can push you into a calorie deficit, effectively turning your maingain into a cut and potentially hindering recovery and strength gains. Stick to 2-3 weekly sessions of low-intensity steady-state (LISS) cardio for heart health.
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.