Athlete State Intelligence

Know your true
training state.

Your devices collect the data. Ryun turns it into answers. Ask your AI coach about recovery, pacing, or race readiness — any device, any time.

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Am I ready for a half marathon in 3 weeks?

Based on your current fitness profile, you’re in a solid position for a half marathon but should manage the taper carefully.

Current Fitness State

VDOT: 48.2 (predicted HM: 1:32:14)

CTL: 52.3 (trained)

TSB: +4 (fresh)

ACWR: 0.88 (safe zone)

Recommendation

Begin taper in 10 days. Reduce volume by 40%, maintain two threshold sessions. Target race-week TSB: +8 to +12.

How did Tuesday’s intervals affect my recovery overnight?

Your 5×1000m session produced a high training load. Overnight metrics show suppressed autonomic recovery — consistent with the elevated load and aerobic TE.

Interval Session

5 × 1000 m @ 3:42/km

Avg HR: 172 bpm (82% HRmax)

Training Load: 169 (high)

Aerobic TE: 4.5 (highly improving)

Time Z5: 14:28

Overnight Recovery

Nightly HRV: 41 ms (7d avg: 53 ms, −23%)

Resting HR: 48 bpm (typical: 44)

Body Battery: 22 (low — expect 48h recovery)

Why was today's easy run harder than usual?

Your easy run today showed elevated cardiac strain relative to the prescribed intensity. Here’s what the data suggests:

Session Analysis

Avg HR: 152 bpm (Z2 target: 138-145 bpm)

HR Drift: +8.2% (elevated)

RPE reported: 6/10 (expected: 3-4)

Contributing Factors

Sleep: 5.2 h (below 7h baseline)

HRV: 38 ms (below band)

Am I ready for a half marathon in 3 weeks?

Based on your current fitness profile, you’re in a solid position for a half marathon but should manage the taper carefully.

Current Fitness State

VDOT: 48.2 (predicted HM: 1:32:14)

CTL: 52.3 (trained)

TSB: +4 (fresh)

ACWR: 0.88 (safe zone)

Recommendation

Begin taper in 10 days. Reduce volume by 40%, maintain two threshold sessions. Target race-week TSB: +8 to +12.

Simulated examples for illustrative purposes. Actual responses vary based on individual data availability and connected devices.

Integrations & platforms

GarminStravaSuuntoCorosPolarGarminStravaSuuntoCorosPolar

Your AI-powered running partner.

A coach that remembers.

Ryun builds knowledge that evolves, not just stores — goals, patterns, injuries, race targets. The longer you train, the smarter your coach gets.

A coach that adapts.

When your body says no, Ryun proposes a change — and waits for you to confirm. You decide what happens next.

Yourplan,alwaysinmotion.

Ask your coach, not your charts.

Ryun turns your data into clear answers — recovery, pacing, race readiness — in plain language, grounded in your numbers.

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How did my LT pace progress
over the last 8 weeks?

Built on real physiology — not guesses.

Ryun uses proven models like CTL/ATL/TSB, VDOT and HRV. Every metric is deterministic, inspectable, and never hallucinated.

Daniels VDOT

Input5K @ 18:42

FormulaVDOT = -4.6 + 0.18·v + 0.000104·v²

OutputEasy pace 5:14/km

Peer-reviewed · deterministic

Your training, quantified.

Every session interpreted. Fitness, fatigue, and form — the metrics that predict your next breakthrough.

HRV Recovery

Nightly lnRMSSD with 7-night rolling baseline

HRV

Tue, Dec 23

lnRMSSD4.15

Baseline3.79

Deviation+0.36

Z-score+1.63

StatusRecovered

Science Notes

HRV

The Norwegian Method: Why Double Threshold Works

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Know your true training state.