S1
Peak Strength
Heavy compound lifts. Reserved for your highest readiness days — Body Battery high, HRV balanced, load in range.
The Forerunner 265 doesn't have Training Readiness. Forma doesn't need it — it builds its own readiness assessment from HRV, Body Battery, sleep, and training load.
Try it free →Free guest mode · Pro from £14.99/mo · 28-day trial included
The gap
The Forerunner 265 tracks all four inputs Forma uses natively: Heart Rate Variability status, Body Battery, sleep score, and training load. Every morning these four numbers paint an accurate picture of your recovery — your watch already has the data.
Training Readiness is not available on the Forerunner 265 — but Forma doesn't rely on it. Forma runs its own readiness assessment engine using the raw biometric signals your 265 already captures. The absence of Training Readiness from Garmin's menu is irrelevant to Forma's decision pipeline.
What the 265 doesn't do is tell you what to do in the gym. Forma fills that gap. Each morning it reads your HRV, Body Battery, sleep score, and training load, computes a readiness tier, and prescribes a structured strength session calibrated to that tier — push today or pull back, with specific exercises, sets, and rep ranges.
How it works
Every morning, enter the values your Forerunner 265 shows. Forma runs them through its decision engine and returns a session type, dose rating, and training window.
| Input | What it signals | Source on 265 |
|---|---|---|
| HRV Status | Autonomic nervous system recovery | Health Snapshot / Morning Report |
| Body Battery | Overall energy reserve (0–100) | Body Battery widget |
| Sleep Score | Sleep quality and duration | Sleep tracking widget |
| Training Load Ratio | Acute vs chronic load balance | Training Status page |
| HRV Low Streak | Multi-day stress accumulation | HRV Status history |
Compatibility
Here is exactly what the Forerunner 265 provides and how each signal maps to Forma's engine.
| Signal | Available on 265 | Used by Forma |
|---|---|---|
| HRV Status | ✓ Yes | Primary recovery signal |
| Body Battery | ✓ Yes | Session intensity cap |
| Sleep Score | ✓ Yes | Overnight recovery input |
| Training Load | ✓ Yes | Acute/chronic ratio input |
| Training Readiness | Not available on 265 | Not required by Forma |
What Forma adds
Garmin's Strength Coach feature isn't available on the Forerunner 265. Even on devices that do have it, Strength Coach works from a fixed programme rather than daily biometric adaptation. Forma operates differently: every session is generated fresh from last night's data, not from a calendar-based plan.
The Forerunner 265 is a serious running watch that carries the sensors Forma needs. It already measures HRV, Body Battery, and sleep with the same accuracy as higher-tier Garmin devices. Training Readiness is absent — but Forma's engine replaces it entirely using those underlying signals directly.
If you have been looking for structured strength programming that responds to how you actually slept and recovered rather than what week of a plan you are on, Forma is built for that use case. No account required to start.
Example decision
You wake up, check your Forerunner 265, and enter four values. Forma returns a session prescription in seconds.
This morning's data
Session types
Forma maps your biometrics to one of five session types each morning. The prescription includes exercise selection, set structure, and rep targets.
Get started
Enter your numbers and get your first session prescription in under a minute. No account, no subscription required to start.
Generate my session →Free guest mode available · Pro from £14.99/mo · 28-day trial included
FAQ
Does Forma work with the Forerunner 265?
Yes. The Forerunner 265 tracks HRV Status, Body Battery, sleep score, and training load — all four inputs Forma's engine uses. You read the values from your 265 each morning and enter them in Forma. Full compatibility, no workarounds needed.
My 265 doesn't have Training Readiness. Does that matter?
No. Forma does not use Garmin's Training Readiness score. It runs its own readiness assessment from the underlying signals — HRV, Body Battery, sleep, and training load — which your 265 provides. The absence of Training Readiness from the 265's menu has no effect on Forma's output.
Is Forma free?
Forma's guest mode is free with no account required. You can generate session prescriptions immediately. Pro (£14.99/mo) adds unlimited daily decisions and Garmin workout push. A 28-day free trial of Pro is included on first Garmin Connect.
Do I need Garmin Strength Coach for Forma to work?
No. Forma works independently of Garmin's Strength Coach feature. Forma generates its own structured session prescriptions based on your recovery data, then can push the workout directly to your Garmin device via Garmin Connect (Pro feature). Strength Coach on your watch is not required and not used.
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