Rules Decide.
AI Explains.
Gymmie builds deterministic, auditable training plans from your equipment, readiness, recovery signals, and training history.
Deterministic Intelligence
Gymmie keeps workout decisions in versioned rules, then uses AI only to explain the plan in plain language.
Training Guardrails
Rules-based checks constrain volume, intensity, recovery, and substitutions before each workout is shown.
Auditable Plans
Every workout can be traced back to deterministic inputs, constraints, and reason-coded decisions.
Narrative Firewall
AI formats coaching text, but it never chooses exercises, sets, reps, loads, or progression.
Training
Guardrails.
Performance requires reliability. Gymmie uses your check-ins and training history to reduce avoidable overload before you start your workout.
Readiness Gates
Recovery, fatigue, and check-in signals constrain training before a plan is shown.
Safety Checks
Deterministic limits keep training within configured workload, fatigue, and readiness constraints.
Decision Evidence
Training Load
Fatigue Levels
Fatigue Map
Muscle fatigue evidence informs deterministic workload limits.
Rule-Backed Explanations
"Your recent load and readiness signals triggered a recovery constraint. Today's session was reduced by rule, then explained in plain language so you know exactly why."