March 16, 2025

The Minimum Effective Dose for Strength Training

Life gets chaotic. Between work, family, and the curveballs you didn’t schedule, squeezing in a lift can feel impossible.

The problem is we tend to think that if we can’t hit the perfect one-hour gym session, we might as well do nothing. And that’s a big mistake.

Sometimes, the smartest move is switching into maintenance mode.

To figure out how little training you actually need—and when more is worth it—I leaned on two major meta-analyses from Brad Schoenfeld, one of the leading researchers in muscle hypertrophy. These reviews looked at training frequency, weekly volume, and what’s truly required to maintain strength and muscle.

Essential Training Frequency

Schoenfeld’s 2018 meta-analysis examined how often you need to train a muscle group each week to grow.

Key takeaways:

Training frequency by itself doesn’t significantly impact hypertrophy when total weekly volume is matched.
Whether you train a muscle once or three times per week, similar growth occurs if sets × reps are equal.
Higher frequency can help if it allows you to accumulate more volume with less fatigue.

What this means in real life:

Maintenance or slight improvements: Training a muscle once per week can be sufficient if effort and volume are high.
Maximizing hypertrophy: Spreading volume over 2–3+ sessions per muscle may help if it enables more total work.
Busy schedules: Once-per-week training still works surprisingly well when sessions are focused and hard.

Sets, Reps, and Weekly Volume

Schoenfeld’s 2017 meta-analysis examined how many weekly sets per muscle group are associated with muscle growth.

Key takeaways:

There is a clear dose–response relationship: more sets generally lead to more hypertrophy.
Each additional weekly set was associated with ~0.37% greater muscle growth.

When grouped by weekly volume:

<5 sets/week: ~5.4% muscle growth
5–9 sets/week: ~6.6% muscle growth
10+ sets/week: ~9.8% muscle growth

In other words: more work, more gains—but the upper limit is still unclear.

On a recent podcast, Mike Israetel suggested ~20 sets per muscle per week may maximize growth for advanced lifters. That’s useful context—but it’s also well beyond what most people need or can recover from.

So What Should Normal Humans Do?

Here’s a practical breakdown:

Maintenance (retain strength & muscle):

~5 sets per muscle per week
Low volumes can maintain muscle if effort is high

Moderate gains (time-efficient progress):

5–9 sets per muscle per week
Ideal for busy schedules and sustainable progress

Maximum hypertrophy (optimal growth):

10+ sets per muscle per week
Advanced trainees may benefit from 12–20 sets, assuming recovery is managed