Forerunner 965 · Strength Training
The Forerunner 965 is Garmin's most capable running watch. Forma gives it recovery-adaptive strength programming — using the biometric data it already tracks.
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The gap
The Forerunner 965 sits at the top of Garmin's running lineup. It tracks HRV status overnight, Body Battery around the clock, sleep score with stage breakdown, training load ratio, and Training Readiness — a composite score that surfaces how prepared you actually are for the day's effort.
But the 965 has no native strength programming. It can tell you that your Body Battery is at 48 and your HRV is low unbalanced — and then leave you to decide what to do about it. Most people either ignore the data and follow a fixed programme, or use it loosely as a gut check. Neither approach closes the loop.
If you run and also lift, the problem compounds. Your training load ratio is shaped by your runs. A hard weekend long run pushes load high — which means Monday's strength session should adapt, not stay fixed. Forma reads both sides and prescribes accordingly.
How it works
You enter yesterday's biometrics from your 965. Forma's engine weighs each signal and prescribes a session type for today.
| Input | What it reflects | How Forma uses it |
|---|---|---|
| HRV status | Autonomic nervous system state overnight | Primary readiness signal — Balanced, Low Unbalanced, or Poor sets the floor for intensity |
| Body Battery | Cumulative recovery reserve (0–100) | Direct cap on session intensity; under 30 typically routes to S5 recovery regardless of HRV |
| Sleep score | Sleep quality and quantity combined | Modifies the HRV verdict — high sleep score can offset a borderline HRV reading |
| Training load ratio | Acute vs chronic training load | Prevents overreach — high load ratio suppresses S1/S2 even on good HRV days |
| HRV low streak | Consecutive days of low HRV | Multi-day fatigue detection — a 3-day streak triggers harder suppression than a single bad night |
Compatibility
The 965 is one of 27 Garmin devices supported by Forma. It provides every metric the engine uses — and then some.
| Metric | Forerunner 965 | Required by Forma |
|---|---|---|
| HRV Status | ✓ | ✓ |
| Body Battery | ✓ | ✓ |
| Sleep Score | ✓ | ✓ |
| Training Load Ratio | ✓ | ✓ |
| Training Readiness | ✓ | Not required — Forma derives its own readiness tier |
Filling the gap
Garmin's Strength Coach feature — available on select devices — offers guided strength workouts on-wrist. The Forerunner 965 does not include it. The 965 is optimised for multisport and running performance, not on-device strength programming.
Forma works differently. Rather than putting guided reps on your wrist, it prescribes the right session type based on your recovery state and pushes a full structured workout to Garmin Connect. Your 965 then shows it as a scheduled workout when you're ready to go. It works on all 27 supported Garmin devices — the 965 included — with no special hardware required.
Example prescription
Here is what Forma does with a specific set of Forerunner 965 readings.
Session types
Forma's engine outputs one of five session types depending on your biometric state. Each one is a fully structured workout pushed to Garmin Connect.
No app install. Works on any device. Enter your 965 readings and get a session prescription in seconds.
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FAQ
Does Forma work with the Forerunner 965?
Yes. The Forerunner 965 is fully supported. It provides HRV status, Body Battery, sleep score, and training load ratio — every input Forma's engine uses. Connect your Garmin account and Forma reads the data automatically on each session.
I run and lift — can Forma account for running load?
Yes. Training load ratio captures the cumulative effect of all activity — running included. A high ratio after a hard run week will suppress strength session intensity just as effectively as a hard lifting week would. Forma does not distinguish the source of the load; it reads the body's response to it.
Is Forma free?
Forma has a free guest mode — enter your biometrics and get a session prescription with no account required. Creating an account and connecting Garmin for automatic data fetch and workout push requires a Pro subscription (£14.99/mo), which includes a 28-day free trial.
Does Forma use Training Readiness from the Forerunner 965?
Forma does not use Garmin's Training Readiness score directly. Instead, it derives its own readiness tier (R1–R4) from the underlying signals — HRV status, Body Battery, sleep score, and training load ratio. This gives the engine direct control over the weighting rather than depending on Garmin's composite score, which is calibrated for running performance rather than strength programming.