# How to build muscle > To build muscle you need three things: progressive overload (lifting more over time), enough protein (about 1.6–2.2 g per kg of bodyweight) and a slight calorie surplus, plus enough recovery and sleep. Consistency over months matters more than any single programme. Source: Lift Republic (https://liftrepublic.com/learn/how-to-build-muscle) Category: Muscle · Published: 2026-06-01 · Reviewed: 2026-06-04 Building muscle isn't complicated, but it is precise. Strip away the noise and growth comes down to three drivers — applied consistently, for months, around adequate recovery. ## The three drivers of muscle growth 1. **Progressive overload.** Your muscles adapt to a stimulus that exceeds what they're used to. In practice that means gradually doing more over time — more weight, more reps, or more quality sets — on the lifts that matter. 2. **Mechanical tension through a full range of motion.** Train each muscle hard, with control, taking most sets close to failure (roughly 1–3 reps in reserve). 3. **Enough protein and energy.** Muscle is built from protein and fuelled by calories. Without enough of both, you train hard for little return. ## How to train For most people, training each muscle group **twice a week** with 10–20 hard sets per muscle per week is a productive range. Choose a split you can stick to — full-body, upper/lower, or push/pull/legs all work ([compare the splits](/compare/training-splits)). Prioritise compound lifts (squat, hinge, press, row, pull-up) and add isolation work for the muscles you most want to grow. The single biggest predictor of progress is **consistency and progression**, not the specific split. Log your sessions so you can actually add weight or reps over time — guesswork stalls growth. Our [muscle-growth programme](/programmes/muscle-growth) periodises all of this from your training data. ## How to eat - **Protein:** aim for 1.6–2.2 g per kg of bodyweight per day. Spread it across 3–4 meals. Calculate yours with the [protein calculator](/tools/protein). - **Calories:** a slight surplus (roughly 10–15% above maintenance) supports lean gains without unnecessary fat. Find your numbers with the [maintenance calorie](/tools/tdee) and [calorie target](/tools/calorie-target) calculators. - **Carbohydrate** fuels hard training; don't fear it. Use the [macro calculator](/tools/macro) to split your intake. [[calc:protein]] ## Recovery — where muscle is actually built You grow between sessions, not during them. Sleep 7–9 hours, manage stress, and give each muscle ~48 hours before training it hard again. If your recovery data (HRV, sleep, resting heart rate) is trending the wrong way, that's a signal to back off — exactly what data-driven coaching watches for. ## Common mistakes that stall progress - Programme-hopping instead of progressing one plan. - Training hard but never tracking, so overload never actually happens. - Under-eating protein or calories. - Chronically poor sleep and recovery. Get the three drivers right, stay consistent, and let the data tell you when to push and when to recover. That's how muscle is built — and it's exactly what [the Method](/method) is designed to do. ## FAQ ### How long does it take to build muscle? Most people see visible change in 8–12 weeks of consistent training and notable change in 6–12 months. Beginners gain fastest; the more trained you are, the slower (but still steady) it gets. ### Can I build muscle and lose fat at the same time? Yes, especially if you're a beginner, returning after a break, or carrying higher body fat. It's slower than focusing on one goal — see our body recomposition guide. ### How much protein do I need to build muscle? Around 1.6–2.2 g of protein per kg of bodyweight per day. Use our protein calculator for your exact target.