Reviewed by Bryan Cortez, MS
Curl the pelvis, don't swing the legs — the abs lift, not the hip flexors.
Coaching profile
advanced bodyweight option. 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
under 5 reps (you'll swing instead of curling the pelvis)
Programming
Late
Bodyweight core work — a finisher; grip and control fade when fatigued, so keep it strict.
Model — Double
Fallback model — Triple
Build reps strict (knees tucked, then straight legs), then add a dumbbell between the feet (double progression).
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
Knees tucked (easier) vs straight legs (harder); straps vs bar grip.
Step 2
Pause at the top; slow eccentric; emphasize the pelvic curl, not the hip swing.
Step 3
Captain's chair leg raise, lying leg raise, or reverse crunch.
Substitutions
Captain's chair leg raise, lying leg raise, or reverse crunch.
Compare all core optionsThe Evidence
Builds the abs through a big range with a stretch. Does NOT train rotation/anti-rotation — add oblique work.
SFR — 2.3
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