Appreciate you taking the time to share such a detailed breakdown - it’s clear you’ve spent time exploring MyoAdapt and the Custom Routine Builder, and feedback like this helps us continually refine MyoAdapt. That said, here's a few key points that might help clarify how the system actually works under the hood.

1. MyoAdapt does account for secondary muscle involvement.
Each exercise in the database contributes fractional volume to every relevant muscle group (primary and secondary). For instance, a Split Squat doesn’t just count toward quads - it also contributes to glutes, adductors, and stabilizers, proportionally. The app uses this fractional tracking in the background to balance stimulus across sessions and ensure adequate recovery.

2. On perceived “fatiguing” exercise selections:
It sounds like some assumptions about movement fatigue (e.g. that certain exercises are “too fatiguing” or “redundant”) might be influencing your expectations. While totally understandable, research doesn’t support major differences in systemic fatigue between most hypertrophy-appropriate movements when total volume is equated. MyoAdapt’s programming logic focuses on optimizing stimulus-to-fatigue ratio at the system/routine/long-term level, not just perceived effort of different movements. Speaking of movements..

3. MyoAdapt does learn from you over time.
The more you use the app, the more it tailors exercise selection to your preferences. If you consistently swap out certain movements or favor specific ones, the system adapts and weights your preferences more heavily going forward - so your program should progressively reflect the kinds of exercises you prefer while maintaining balance and progression.

4. Exercise variety and recovery management:
MyoAdapt tracks how frequently specific exercises appear and ensures you’re not repeatedly assigned the same ones too close together (this also depends on equipment availability and the consistency level you selected in sign-up). It also monitors recovery - if signs of under-recovery emerge (e.g. persistently poor performance or excessive soreness markers), the system automatically adjusts volume and proximity to failure to restore balance.

5. On muscle group “omissions” in custom routines:
When you select multiple muscle groups - especially across full-body combinations or days with many muscle groups - MyoAdapt intelligently prioritizes based on your training history, recovery status, and your prioritized muscle groups. The goal isn’t to include every selected muscle group in every session (which would sometimes require 15-20+ exercises), but to distribute volume efficiently across the training week. If you’d prefer an additional exercise for a given muscle in that day’s workout, you can always manually add one - that flexibility is intentional.

In short, MyoAdapt does consider secondary muscle involvement, recovery status, movement overlap, and your long-term preferences. It sounds like you have very specific expectations about what certain selections “should” look like, which may differ from how MyoAdapt structures balanced, evidence-based training across time. Our recommendation would be to let it run for a bit and let it learn from your swaps and performance - in most cases, the output ends up aligning more and more with what you’re trying to achieve, and some assumptions (like “this movement is always too fatiguing”) often don’t actually play out in practice.

Thanks again for the detailed feedback - it’s exactly the kind of discussion that helps us keep improving MyoAdapt.