Calisthenics
Leverage, not ego.
A planche isn’t stronger arms. It’s a shorter lever arm at the same torque. FitX quantifies each progression — tuck, advanced tuck, straddle, full — as a percentage of full-lever load, so you train Tuck at 32 %, not "tuck until it hurts."
What FitX brings to calisthenics.
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Lever progression ladder
Every front-lever and planche step with its relative torque load and biomechanical prerequisites — skip a level, the app tells you why you shouldn’t.
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Torque-aware timing
Hold targets in seconds, not reps — because isometric work is governed by time-under-tension, not count-of-tries. 15–20 s means something.
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Injury prerequisites
Full levers demand shoulder and elbow tendon conditioning. FitX gates each unlock behind prerequisite holds — Dr. López would approve.
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Detailed torque analysis (Elite)
Per-lever moment-arm breakdown and target muscle activation — derived from Marchetti’s EMG work, not fitness-Instagram guesses.
Why torque, not time.
A body holding a front lever is a lever arm balancing torque around the shoulder. Marchetti’s EMG study quantified exactly how much torque each progression produces. FitX treats that number as the training variable — and ignores the Instagram math that says "just hold it longer."
Read the full methodologyFront lever progression tree — current step highlighted, unlock threshold shown.
Ready to train the lever, not the rep?
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