Hypertrophy programming basics
To grow muscle, you need:
- Enough volume (sets × reps × load)
- Enough intensity to recruit high-threshold motor units
- Enough frequency to train each muscle multiple times per week
- Enough recovery between sessions
Volume targets
Per muscle group, per week, the current evidence-based range:
- 10 sets/week = solid baseline
- 12-20 sets/week = optimal for most
- 20+ sets/week = diminishing returns, more recovery needed
Intensity
Reps in the 6-15 range produce hypertrophy reliably when sets are taken close to failure (within 1-3 reps of failure, also called RIR or RPE 7-9).
Light loads (15-30 reps) also produce hypertrophy IF taken to failure or near it. The "trick" is hard effort, not specific load.
Heavy loads (3-5 reps) drive strength more than size, but contribute to growth if volume is sufficient.
Frequency
Each muscle group: 2-3 sessions/week minimum. Once a week is suboptimal — research consistently shows 2× outperforms 1× when volume is equated.
Many advanced lifters benefit from 3-4× per muscle group per week, splitting the volume across more sessions for better recovery between sets.
Exercise selection
Anchor the program around compound lifts (squat, deadlift, bench, row, press, chin-up). Add isolation work for:
- Muscles that don't get enough stimulus from compounds (lateral delts, biceps, calves)
- Lagging muscles that need targeted work
- Stretch-emphasized movements (the lengthened portion drives growth)
A starter hypertrophy split
4-day upper/lower:Day 1 (Lower A): Squat 4×8, RDL 3×10, Walking lunge 3×10/leg, Leg curl 3×12, Calf raise 4×15.
Day 2 (Upper A): Bench 4×8, Row 4×8, Incline DB press 3×10, Cable row 3×12, Lateral raise 3×15, Curl 3×12.
Day 3 (Lower B): Deadlift 4×5, Front squat 3×8, Hip thrust 3×10, Leg extension 3×12, Calf raise 4×15.
Day 4 (Upper B): OHP 4×8, Chin-up 4×AMRAP, DB bench 3×10, Face pull 3×15, Lateral raise 3×15, Tricep extension 3×12.
Progression
Add reps within the range first. When you can hit the top of the range with the prescribed RIR, add load.
Example: 4×8 squat at 185lb. Once you can hit 4×10 at 185lb feeling like RIR 1-2, increase to 195lb × 4×8 next session.
Common hypertrophy mistakes
Not training hard enough — RIR 4-5 doesn't grow muscle. RIR 1-3 does. Too much volume too fast — recovery breaks down, gains stall. No exercise variety — same lifts forever stop driving novel adaptation. Rotate exercises every 4-8 weeks. Ignoring stretched positions — full ROM, especially the lengthened end, drives more growth than partial reps.TL;DR
10-20 sets/muscle/week, taken close to failure (RIR 1-3). 2-3 sessions per muscle per week. Anchor on compounds, supplement with isolation. Progress reps first, then load. Rotate exercises every 4-8 weeks.