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Greg Nuckols@gregnuckolsX

I recently updated this article on how close to failure you need to train for muscle growth. tl;dr, it seems like getting really close to

what it claims

To maximize muscle gain, training very close to failure is more crucial for beginners than for advanced practitioners.

holds up

Greg Nuckols' analysis aligns with current research in sports science. Meta-analyses, such as those published by Davies et al.

noli's read

Greg Nuckols' analysis aligns with current research in sports science. Meta-analyses, such as those published by Davies et al. (2016) or more recently by other researchers on proximity to failure, indicate that a dose-response relationship exists, but that the threshold of tolerance changes with experience. For beginners, the stimulus required to trigger adaptation is lower, but since motor efficiency is lower, approaching failure ensures sufficient recruitment of muscle fibers. In trained athletes, evidence suggests that a margin of maneuver (RPE or repetitions in reserve) allows for equally effective progress while better managing systemic fatigue. It is therefore accurate to say that the requirement to 'destroy oneself' on every set decreases with expertise, although the notion of intensity remains central. The idea is not that one must train 'less hard,' but that advanced practitioners have a larger window of tolerance for achieving results without systematically reaching absolute failure.

the sources

  1. 1Schoenfeld BJ, Grgic J, Ogborn D, Krieger JW 2017
  2. 2Refalo MC, Helms ER, Trexler ET, Hamilton DL, Fyfe JJ 2022

Claimed by Greg Nuckols. Noli grades the claim, never the person.

Decoded by Noli · July 18, 2026 · the original post

What the graded evidence says

Evidence
B+
Effect
muscle hypertrophy and 1RM strength, low-load vs high-load resistance training — hypertrophy similar between low and high loads when sets taken to/near failure; 1RM strength significantly favors heavier loads
Measured on
healthy adults, trained and untrained

What’s uncertain

Light loads match heavy loads for size only when sets are taken close to failure; for pure maximal strength, heavier loads have the edge, and body-weight training eventually needs harder variations to keep progressing.

Greg Nuckols in the Register18 claims graded · solidity 98/100See their record →

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