Reviewed by Bryan Cortez, MS
Brace, don't sag — once 60 seconds is easy, add load, not minutes.
Coaching profile
beginner isometric. This page is the practical coaching layer: use it for setup, cues, programming, pain-free adjustments, and substitutions. The complete biomechanics tier list lives on the muscle page.
How the rankings are built →Demonstration
Demonstration production queue
Physique Skool is filming one canonical demonstration per exercise. Until this movement is published, use the setup, execution, common errors, programming, and substitutions below.
Browse Physique Skool on YouTubeHow to do it
No-Fly Zone
multi-minute holds (add load/leverage instead of chasing time)
Programming
Flexible
Low-fatigue stability hold — a finisher, or first as a bracing primer before heavy lifting.
Model — Density
Fallback model — Double
Add time to ~60 sec, then add load (a plate on the back) or leverage (long-lever) rather than chasing 5-minute holds.
Full body
If it hurts
Pain is information, not a challenge to push through. Stop the set if pain is sharp, worsening, or changes how you move. These are exercise-selection options, not medical diagnosis or rehabilitation advice.
Work down this list in order. Stop at the first change that removes the pain.
Step 1
Forearm vs high plank; stance width; knees down to scale.
Step 2
Add a reach or leg lift; long-lever (elbows forward); weighted.
Step 3
Ab wheel, dead bug, or stir-the-pot for harder anti-extension.
Substitutions
Ab wheel, dead bug, or stir-the-pot for harder anti-extension.
Compare all core optionsThe Evidence
Builds anti-extension core stability and bracing. Does NOT build ab size like loaded flexion — pair with cable crunches.
SFR — 9
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