Two sessions of 30 to 45 minutes of full-body resistance training per week captures most of the lean-mass and strength gains of longer programs. Volume above roughly 10 sets per muscle per week shows diminishing returns for non-athletes. The fitness industry sells a higher ceiling because higher ceilings sell programs and supplements. The literature does not support that ceiling for most readers. Schoenfeld 2017 established the volume dose-response; Grgic 2018 established frequency equivalence at matched volume; Paoli 2024 formalized the minimum-effective-dose case.
The headline number worth remembering: untrained and intermediate lifters who hit 8 to 12 working sets per muscle per week at moderate-to-high effort capture 80 to 90% of the strength and hypertrophy gain available to them. Going from 12 sets to 20 sets per muscle per week adds maybe 5 to 10% of additional lean mass over 6 to 12 months, at roughly twice the time cost. For people who are not professional bodybuilders, the time cost rarely justifies the marginal gain.
Frequency does not change the verdict if volume is matched. Two sessions per week of 5 sets per muscle gives the same outcome as four sessions of 2.5 sets per muscle, in head-to-head trials. This is liberating: you do not need a 4-day or 5-day split to get the lean-mass benefit. You need consistency at the dose floor.
Effort matters more than the exact rep range. Sets taken to within 1 to 3 reps of muscular failure (RIR 1 to 3) at any rep range from 5 to 30 reps produce equivalent hypertrophy outcomes. Strength has a tighter dependency on heavier loads (80%+ of 1RM); hypertrophy is rep-range agnostic given proximity to failure.
Compound lifts (squat, hinge, push, pull) cover most of the major muscle groups in fewer total exercises. A two-day full-body template typically runs 6 to 8 working sets across two compound movements plus an accessory or two per session, in 30 to 45 minutes. This is the floor. Anything beyond it is for people optimizing the last 10%.
- Floor: 2 sessions/week of 30 to 45 minutes, full-body. Captures 80 to 90% of available gain.
- Volume target: ~10 working sets per muscle per week. Less than 5 is undertraining; more than 15 has diminishing returns for non-athletes.
- Effort: sets within 1 to 3 reps of failure (RIR 1 to 3). Junk volume is sets stopped at RIR 5+.
- Rep range: 5 to 30 reps for hypertrophy; 5 to 8 for strength. Match-up to load preference.
- Frequency: flexible at matched volume. 2 sessions and 4 sessions yield equivalent outcomes if total weekly sets are equal.
What to actually do
- Pick two non-consecutive days per week and lock them. Same time of day if possible. Treat them as appointments, not as something to schedule around.
- Run a two-exercise primary + one accessory template. Day A: squat or leg press, plus push (bench or overhead press), plus a pull accessory. Day B: hinge (deadlift or RDL), plus pull (row or pulldown), plus a leg accessory. 3 sets each, 6 to 12 reps, RIR 1 to 3.
- Track loads weekly for 12 weeks before changing the template. Add 2.5 to 5 lb when the top set hits the upper rep range. Most program-hopping is a substitute for the patience to drive load on a simple template.
The minimum-effective-dose protocol is not the optimal dose. It is the highest-leverage dose for people whose primary outcome is health and lean mass, not competitive hypertrophy. For the full Schoenfeld and Grgic dose-response evidence and the program template, see the full article.