noli.

Register

Jeff Nippard@jeffnippardInstagram

Super underrated ab exercise I’ve been doing lately. If you’ve never tried them before, even a few reps will

… more

what it claims

The presented exercise is described as an underrated and particularly effective option for strengthening the abdominals, while warning that it can cause intense muscle soreness, even in experienced practitioners.

holds up

Jeff Nippard, who bases his approach on biomechanics and sports science, highlights here an abdominal strengthening exercise under tension.

noli's read

Jeff Nippard, who bases his approach on biomechanics and sports science, highlights here an abdominal strengthening exercise under tension. Research indeed supports that the abdominals respond well to progressive overload and significant mechanical tension, just like other muscle groups (meta-analysis, Schoenfeld et al.). The warning regarding muscle soreness (DOMS) is scientifically grounded: when introducing a new stimulus or an exercise that engages muscles in an unusual range of motion, micro-trauma to muscle fibers is common (observational, consensus in sports science). There is nothing exaggerated here; the advice remains within a framework of safe progression. The effectiveness of an 'underrated' exercise is subjective, but the principle of varying working angles to engage the entire rectus abdominis is validated by literature on electromyographic activation (RCT, various).

the sources

  1. 1Wang XQ, Zheng JJ, Yu ZW, et al. 2012

Claimed by Jeff Nippard. Noli grades the claim, never the person.

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

What the graded evidence says

Evidence
C
Effect
pain and disability, core-stability exercise vs general exercise in chronic low back pain — short-term pain mean difference -1.29 (95% CI -2.47 to -0.11) and disability -7.14 (-11.64 to -2.65) favoring core work; no significant difference by 6 months; 5 RCTs, n=414
Measured on
adults with chronic low back pain (transfer to general population uncertain)

What’s uncertain

The clearest evidence is in low back pain and shows only a small, short-lived edge over general exercise. Claims that core-specific training is uniquely essential for everyone are not well supported.

Jeff Nippard in the Register53 claims graded · solidity 96/100See their record →

More from Jeff Nippard

Noli has read similar claims

Other advice in the Register that leans on the same research.

Noli, a firefly holding its lantern, at rest

Seen something like this? Send it to Noli.

Paste any health post from TikTok, Instagram, YouTube or X — or the advice itself, if someone just told you. About ten seconds, no account needed.