How To Build Muscle (Explained In 5 Levels)

Summary

Jeff Nippard presents muscle-building advice in five increasingly detailed levels, moving from basic habits to the physiology behind muscle growth.

1. The basics: Lift weights and eat protein. Training gives muscles a reason to adapt, while protein supplies the amino acids needed to build muscle.

2. Progress and protein targets: To keep growing, gradually increase the challenge over time—for example, by adding weight, reps, or sets, or by improving control and technique. Nippard recommends about 1.6–2.2 grams of protein per kilogram of body weight daily (roughly 0.7–1 gram per pound) for most people. Meeting the daily target matters more than carefully timing protein across meals.

3. How to train: Most sets should be challenging and finish within roughly two or three reps of failure. Weekly training volume has a useful range; “always more is better” is not a reliable rule. Around 10–20 hard sets per muscle group works for many people, though individual needs vary. A wide range of rep counts can build muscle when sets are sufficiently hard. Nippard suggests doing most work in the 6–12 or 15-rep range, alongside some lower- and higher-rep training. Compound lifts are efficient, while isolation exercises can target smaller muscles. He generally prefers training each muscle about twice weekly, though frequency appears to play a relatively minor role if the rest of the program is sound.

4. What drives growth: Nippard reviews the “three-factor” model—mechanical tension, muscle damage, and metabolic stress—and argues that mechanical tension is the key driver. Soreness and muscle damage are not reliable goals: early soreness may reflect damage the body is repairing rather than new muscle growth. Likewise, a pump can feel satisfying but does not necessarily mean a workout will produce more growth. The practical takeaway is to apply progressively greater tension with consistent technique and appropriate training variables.

5. The cellular process: Mechanical sensors in muscle detect tension and pass signals through pathways involving mTOR, which helps direct the cell’s protein-building machinery. Training stimulates muscle-protein synthesis; amino acids from food provide building blocks, and leucine also helps activate mTOR. When muscle-protein synthesis exceeds breakdown, contractile proteins can be added to muscle fibers. Nippard notes that details—including the roles of sarcoplasmic growth and satellite-cell nuclei—remain under investigation.

Presenters and sources mentioned

Jeff Nippard (presenter); Dr. Brad Schoenfeld (2010 paper on the three-factor model); Dr. Trommelen (signaling pathways); Arnold Schwarzenegger (quoted on the training “pump”); unnamed researchers cited on muscle damage, blood-flow-restriction training, and other findings; and unnamed experts consulted in muscle metabolism, biomechanics, and strength and conditioning.