ZonalFit is built on clinical guidelines, peer-reviewed research, and a patent-pending lifecycle engine validated by 2,000+ automated tests.
Most fitness apps use machine learning to guess what you need. ZonalFit doesn't guess. When your life stage, equipment, injuries, and daily readiness are known, a deterministic rules-based engine produces more accurate, clinically defensible programming than prediction models. Zero latency, zero hallucination, 100% explainable.
Each categorized by pattern, equipment, difficulty, muscle group, and lifecycle safety flags.
Every code change is validated against safety, selection logic, and lifecycle adaptation rules.
Menstrual cycle, pregnancy, postpartum, perimenopause, menopause, PCOS, endometriosis, and GLP-1.
We don't invent exercise science. We implement it.
Guidelines for exercise testing and prescription inform our volume, intensity, and rest period calculations across all training levels. ACSM's position stands on resistance training for healthy adults form the backbone of our programming logic.
NSCA's periodization frameworks guide our 12-week program structures. Exercise selection hierarchy, progressive overload protocols, and training frequency recommendations are all NSCA-aligned.
Pregnancy and postpartum programming follows ACOG's physical activity guidelines. Trimester-specific exercise restrictions, contraindication screening, and return-to-exercise timelines are directly implemented from ACOG recommendations.
Injury zone exclusion logic and exercise substitution patterns draw from APTA clinical practice guidelines. Pelvic floor integration for postpartum and endometriosis programming references APTA's women's health section guidance.
Our PCOS engine implements recommendations from the 2023 international guideline, including exercise type, intensity, and frequency for insulin sensitivity and symptom management.
Research on female-specific training responses, particularly around menstrual cycle phase training, perimenopause programming, and the critical importance of heavy loading for post-menopausal women, directly informs our lifecycle multipliers.
ZonalFit's lifecycle-adaptive workout generation system is protected by a provisional utility patent. The patent covers our method of integrating reproductive lifecycle context with deterministic exercise programming, including the real-time reinterpretation of wearable readiness scores through hormonal phase context.
This isn't a cycle tracking app that suggests workouts. It's a strength training engine that treats female biology as a first-class input to programming decisions.
Pull workouts from a pre-built library. Same workout for a 25-year-old marathon runner and a 48-year-old in perimenopause. "Personalization" means choosing a difficulty level.
Generates every workout in real time based on your life stage, cycle phase, equipment, injuries, training history, and daily readiness. No two sessions are the same because no two days are the same.
Track your period and suggest "lighter workouts during your period." No actual programming. No exercise selection. No periodization. Calendar-based predictions that don't account for how you actually feel.
Doesn't predict your cycle. You tell us where you are today. The engine adapts your actual workout: exercise selection, volume, intensity, rest periods. Symptoms override calendar math because your body outranks the algorithm.