ScienceRecovery

Deload signals, pain flags & minimum-dose weeks

The thresholds that trigger a deload suggestion, how recurring pain notes change prescriptions, and training through busy weeks.

Reviewed July 10, 2026 · 3 cited sources


Recovery rules read your history, not your mood

Fatigue management in most apps is either absent or a wellness questionnaire. Flexbound's recovery rules run against the same confirmed history as everything else: top-set performance, volume trends, and the pain notes you write in your own words.

The deload signal, exactly

If top-set performance declines across two or more consecutive sessions on a key lift while accumulated volume is high, the app suggests one deload week: load reduced about40–50%, or volume reduced about 50%.

This rule is graded coach opinion, and we print that grade in the app. The research consensus is solid that planned fatigue reduction works; the exact trigger thresholds are practice, not settled science. Honest labeling beats borrowed authority.

Pain flags change the math

Write "knee felt cranky again" three sessions in a row and the progression engine reacts: aggravating movements get about a10% load reduction or a joint-friendlier substitution suggestion. Persistent, sharp, or worsening pain gets a different message entirely and see a qualified professional. An app that only ever says "add five pounds" isn't a coach; it's a metronome.

Busy weeks: do less, keep the signal

When time or recovery is constrained, the minimum-dose rule preserves consistency over completeness: shorter sessions built around the highest-priority compounds plus a few hard accessory sets. A 35-minute session that keeps the loop alive beats a skipped week every time.

The under-fueling guardrail

Hard training plus aggressive dieting plus fatigue, poor sleep, recurring illness, or bone-stress pain is a pattern the app treats as anunder-fueling risk, following the IOC's consensus on Relative Energy Deficiency in Sport. The response is never "restrict harder." It is a recommendation for professional support. Some coaching moments are referrals, and a responsible app knows which ones.

Limits, stated plainly

Session-to-session performance is noisy. Sleep, stress, and life all show up in the bar speed. Two data points can be a cold gym, not overreaching, which is why deload suggestions are suggestions: dismissible, explained, and never auto-applied. Pain detection depends on you writing pain down; the notebook can only coach what it can read.

References

  1. Resistance Training Prescription for Muscle Strength and Hypertrophy in Healthy Adults: An ACSM Expert Consensus StatementCurrier BS et al. · Medicine & Science in Sports & Exercise, 2026
  2. 2023 International Olympic Committee consensus statement on Relative Energy Deficiency in SportMountjoy M et al. · British Journal of Sports Medicine, 2023
  3. ACSM's Guidelines for Exercise Testing and Prescription, 12th editionAmerican College of Sports Medicine · ACSM / Wolters Kluwer, 2025

Flexbound provides fitness tracking and nutrition estimates, not medical advice. These pages document the app's methodology; consult a qualified professional for medical or dietary concerns.

Coming to iOS

This math ships in the app.

Every rule on this page runs deterministically in Flexbound. It is versioned, cited, and auditable. Coming to iOS.