STATURESTATURE Mechanics
OPEN SEASON — All features unlocked free through March 21 — All features free· ending soon
OPEN SEASON — All features unlocked free through March 21 — All features free· ending soon
Every exercise targets a muscle — but your body proportions determine how well that exercise actually loads that muscle. Long femurs change squat muscle activation. Short arms change chest emphasis on the bench press. Long torsos affect lat recruitment on rows. STATURE's biomechanics engine shows you which exercises are actually doing what you think they're doing — for your specific body.
Free. No sign-up. Runs entirely in your browser.
The bodybuilding canon was built by a generation of lifters with specific proportions — and those proportions shaped which exercises they swore by. Long-armed lifters get more chest from a close-grip bench. Short torsos change the hip hinge in Romanian deadlifts. High attachment points change the look of a movement. Your optimal exercise selection depends entirely on your levers, and STATURE calculates exactly what yours are doing.
See how your proportions change muscle loading in each major movement. Understand whether your squat is actually quad-dominant for your body — or whether your femur length shifts work to your hips.
Small changes to grip width, stance, and bar position can dramatically change muscle emphasis. Get ranked variant recommendations for your proportions across all major compound movements.
Map your full proportion profile across six lifts. Identify which movements your levers put you at a mechanical advantage for — and build your program around movements that actually fit your body.
Some lifts feel hard no matter how hard you train them. STATURE shows whether that difficulty is proportional — your levers working against you — so you can decide whether to fight it or route around it.
STATURE calculates moment arms — the perpendicular distance from the joint center to the line of force — for each segment in your kinematic chain. Longer moment arms mean more torque demand on that joint, indicating greater loading of the muscles crossing it. This shows you whether a given exercise is actually loading the target muscle the way you intend.
Significantly. Longer arms mean a greater range of motion and more horizontal bar travel, which increases pec stretch and loading at the bottom. Shorter arms reduce bar travel and may shift more demand to triceps. STATURE calculates this for your specific arm length and shows it in the movement animation.
Almost certainly, yes — and STATURE will quantify it. Longer femurs increase the horizontal distance between your hip and knee, which increases the hip moment arm relative to the knee. This shifts proportionally more work to the glutes and hamstrings compared to the quads. STATURE calculates the ratio for your specific femur length.
The current tool covers barbell mechanics for major compound movements. The variant analysis ranks grip width, stance width, and bar position — all of which apply directly to barbell movements. Isolation exercise analysis is on the long-term roadmap.
Start with the build profile to see which lifts show high demand factors for your body. Then use the variant optimizer to find setups that either reduce the disadvantage or lean into it strategically. Sometimes a 'weak' movement is just poorly matched to your proportions — a variant change can resolve it.
The core comparison and analysis tools are free. STATURE Pro ($49 lifetime) adds full build profiles, training logs, saved comparisons, and custom segment inputs. One payment, lifetime access.
Exercise selection, variant optimization, and muscle loading — tuned to your levers.
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