An integration is only useful if it reduces friction and preserves context. Apple Watch does both—when it’s connected to the plan, not just the workout.
Keep the session as the source of truth
Instead of collecting heart-rate data and trying to interpret it later, attach it to the session you planned: what was prescribed, what was done, and how the body responded.
Use physiology to guide adjustments
- Identify drift: when similar sessions start to feel harder.
- Validate progress: improved response at the same workload.
- Protect consistency: adjust early to avoid missed sessions.