Who This Is For
- - Intermediate lifters running multi-week strength blocks.
- - Powerlifters managing stress across squat, bench, and deadlift sessions.
- - Coaches who need fast load-risk snapshots from daily session logs.
Session Load & Fatigue Monitor
Track sRPE-based session load and monitor acute load, chronic load, ACWR, monotony, and strain in one workflow. Built for strength athletes who need practical fatigue guidance without a spreadsheet stack.
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What to Calculate Next
Continue your workflow with one of these related calculators.
When Not to Use This Tool
- - Do not use this as a medical screening tool.
- - Do not ignore pain or technique breakdown just because risk appears low.
- - Do not interpret ACWR in isolation without readiness and performance context.
Worked Examples
Example (stable week)
7-day load sits near 28-day baseline with monotony below 1.5.
Result: Risk remains low and progression guidance stays in the 5-10% range.
Example (load spike week)
Acute load jumps well above chronic baseline with repetitive high-load days.
Result: Risk escalates and recommendation shifts to temporary load reduction.
Method Summary
The engine computes daily load as duration × session RPE, then derives acute (7d) and chronic (28d-equivalent) load, ACWR, monotony, and strain. Risk level is set by the highest severity flag and adjusted for low-data confidence states.
Assumptions
- - Session RPE reflects whole-session effort reasonably well.
- - Duration and date logging are consistent across sessions.
- - Load trends are interpreted with technical quality and recovery context.
Method Limitations
- - ACWR and monotony are monitoring heuristics, not injury prediction guarantees.
- - Sparse or inconsistent logs reduce interpretation quality.
- - The model does not include sleep biomarkers, HRV, or velocity metrics.
Safety
- - Treat high-risk signals as a reason to lower next-session stress and reassess.
- - Keep at least one lower-load day in repeated high-monotony weeks.
- - Use conservative progression when ACWR remains above target for multiple weeks.
Sources
Trust & Updates
Author: Manish Kumar
Last reviewed: February 18, 2026
Update log
- - 2026-02-18: Added session load monitor with ACWR, monotony, and strain outputs.
- - 2026-02-18: Added local history persistence with import/export workflows.
- - 2026-02-18: Added clean URL share-state model and compact entry serialization.
FAQ
What is session load in this tool?
Session load is duration multiplied by session RPE. Example: 75 minutes at RPE 8 = 600 load units.
What does ACWR tell me?
ACWR compares your recent 7-day load to your 28-day baseline. Higher spikes can indicate elevated fatigue and adaptation risk.
Why is monotony important?
Monotony reflects how similar your day-to-day loads are. Very repetitive loading patterns can increase stress accumulation.
How is strain used here?
Strain combines weekly load and monotony. It highlights whether total stress is rising faster than your recent baseline.
How much data do I need before trusting risk outputs?
At least 28 days improves ACWR and strain confidence. The tool flags low-confidence states when history is too short.
Should I reduce load every time risk is moderate?
Not always. Moderate risk is a signal to check context: sleep, soreness, bar speed, and upcoming session goals.