Soreness isn't a sign of muscle growth (it's mostly inflammation); growth comes from mechanical tension, plus recovery habits — sleep, protein, training frequency.

noli's read

The Van Every, Lees, Wilson, Nippard & Phillips review (2025, Journal of Sport and Health Science, from Stuart Phillips' McMaster lab) confirms mechanical tension as the primary driver of hypertrophy and dismantles several often-oversold secondary mechanisms (acute hormonal response, metabolic stress, 'the pump', sarcoplasmic hypertrophy) as lacking demonstrated meaningful effect — exactly the video's framing. The cited sleep studies are real and verifiable: Lamon et al. (2021, Physiological Reports) on sleep deprivation and muscle protein synthesis, Leproult & Van Cauter (2011, JAMA) on testosterone dropping after a week of sleep restriction, Nedeltcheva et al. (2010, Annals of Internal Medicine) on insufficient sleep undermining fat-loss efforts. The 'soreness ≠ growth' framing (soreness reflects damage/inflammation, not a hypertrophy signal) is also consensus in exercise physiology. Verdict: holds — well-sourced and accurate content.

the sources

No named source held this one up — that absence is part of the verdict.