Lean Bulk: How Fast Should You Gain Weight?

How big a surplus?

A modest surplus of around 5 to 10% above your maintenance calories is a sensible starting range. For most people that is roughly 150 to 300 calories a day.

The problem is that nobody knows their maintenance calories precisely. Calculators give you an estimate, but real-world maintenance varies a lot between people. So:

1. Start with your best estimate of maintenance plus a small surplus. The free macro calculator works this out for you.
2. Weigh yourself every morning and track your weekly average (we explain why in how to read the scale).
3. After two to three weeks, compare your actual rate of gain with your target, and adjust.

How to adjust

• Gaining faster than your target? Reduce calories by about 100 to 200 a day. A little faster in the first week or two is normal as food volume and stored carbohydrate rise, so judge the trend after that.
• Gaining slower than your target, or not at all? Add about 100 to 200 calories a day, mostly from carbohydrate or fat.
• On target? Change nothing. Resist the urge to tinker.

Your maintenance will drift upward as you get heavier, so expect to raise calories gradually over a long bulk.

Macros on a lean bulk

• Protein: about 1.6 to 2.2 g per kg of body weight per day. You need less of a buffer than on a diet, so the middle of the range is fine. See how much protein you need to build muscle.
• Fat: enough for health and enjoyment, commonly around 20 to 30% of total calories.
• Carbohydrate: the rest. Carbohydrate fuels hard training, so most of your surplus usually comes from here.

Training is what makes the surplus count

A surplus without a good training program just makes you heavier. The surplus supports growth. Training creates the reason for it. Make sure that:

• You train each muscle group around twice a week, with enough hard sets to drive progress (see how many sets per week).
• Most working sets are taken close to failure, with good technique.
• You are progressively overloading: adding reps or weight over time. If your lifts are not improving on a bulk, something needs to change.

Signs your bulk needs a change

• Your waist measurement is rising quickly while your lifts are not.
• You feel sluggish, bloated or hungry for nothing but junk food.
• Your weekly average weight is rising much faster than your target.
• Your strength has stalled for several weeks despite a steady gain in weight.

When to stop

A lean bulk is easier to sustain than a dirty bulk, but it still has an end. Many people run a muscle-gain phase until they are less lean than they are comfortable with, then do a short, controlled fat-loss phase (see how to lose fat without losing muscle) before building again.

Where coaching helps

The maths of a lean bulk is simple. The hard part is staying patient for months, reading noisy weight data correctly and making small adjustments at the right time instead of panicking or giving up.

With one-to-one coaching from CoachAk, your calories, macros and training are set for your goal and experience. Each week you log your weight and send a check-in, and your coach adjusts the plan based on your real rate of gain and how your training is going.

If you want to build muscle without the guesswork, apply for coaching.