# How to train with your wearable data > Your wearable's most useful signals are training load, recovery/HRV, sleep and heart-rate zones. Use load to balance hard and easy days, recovery to decide when to push, and zones to train at the right intensity — then track trends, not single days. Source: Lift Republic (https://liftrepublic.com/learn/train-with-your-data) Category: Performance · Published: 2026-06-01 · Reviewed: 2026-06-04 Your watch collects a remarkable amount of data — and most people ignore the bits that matter. Here's how to actually train with it. ## The signals worth watching - **Training load** — how much stress you're accumulating. Use it to balance hard and easy days and avoid quietly digging a hole. - **Recovery & HRV** — heart-rate variability and resting heart rate hint at whether you're ready for a hard session or need to back off. - **Sleep** — the foundation of adaptation. Chronically poor sleep blunts every other effort. - **Heart-rate zones** — they tell you how hard to work. Calculate yours with the [heart-rate zone calculator](/tools/heart-rate-zones). Most other metrics are interesting but not decision-changing day to day. [[calc:heart-rate-zones]] ## How to act on them 1. **Train easy on easy days.** Most aerobic work should be genuinely easy — Zone 2, conversational. If your easy runs are too hard, your hard days suffer. 2. **Earn your hard days.** When recovery is good, push. When HRV and sleep are trending down, swap intensity for an easy session — your data is telling you something. 3. **Manage the trend.** A single bad night isn't a verdict. Look at multi-day and multi-week trends before changing your plan. 4. **Train to your real zones.** Generic "220 minus age" is a rough start; pacing and power from your history are far more useful for setting intensity. ## From data to a programme Numbers only help if they change what you do. That's the gap most training apps leave — they show you charts but don't make the call (see [data-driven vs traditional coaching](/compare/data-driven-vs-traditional-coaching)). At Lift Republic we connect your Garmin, Strava, Whoop, Apple Health or Hevy and turn the signals into a periodised plan, adjusted every week. See [the technology](/technology), [the Method](/method), or our [athletic performance programme](/programmes/athletic-performance) for how it works in practice. ## FAQ ### Which wearable metrics actually matter for training? Training load, recovery/HRV, sleep, and heart-rate zones are the high-value signals. Most other numbers are noise for day-to-day decisions. ### What is Zone 2 training? Easy, conversational aerobic work at roughly 60–70% of your heart-rate reserve. It builds your aerobic base. Calculate your zones with our heart-rate zone calculator. ### Can a coach use my Garmin or Strava data? Yes — at Lift Republic we connect your data and program from it directly. It's the fastest route to training the right thing instead of guessing.