Bodybuilding
Volume, not violence.
Volume builds muscle — until it breaks you. The line between MEV, MAV and MRV isn’t a vibe; it’s a weekly set count that Schoenfeld mapped in a meta-analysis. FitX tracks where you are on that line, per muscle group, every week.
What FitX brings to the rack.
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Volume landmarks per muscle
MEV, MAV and MRV set counts calibrated per muscle group — quads take more volume than rear delts, the app knows.
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Myofibrillar growth tracker
Hypertrophy shows up as top-set strength at a fixed rep range. FitX logs that curve per lift so you see months of tissue change, not weekly noise.
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Deload trigger
Chronic MAV-plus volume produces fatigue that masquerades as progress. FitX flags when a deload is non-negotiable — not optional self-care.
Why landmarks beat "more is better."
Schoenfeld’s 2017 meta-analysis mapped the dose–response between weekly set volume and muscle growth. The curve rises, plateaus, then turns negative. Israetel formalised the three regions as MEV, MAV and MRV. FitX is the only discipline in the app whose primary metric is a count of sets — because for hypertrophy, that is the metric.
Read the full methodologyWeekly chest volume — currently 14 sets, comfortably inside the MAV band.
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