DRNTS Lab · Performance

Trajectory

Engine, efficiency, and cost — built from what you already log. No VO₂ theater. Just signal.

Estimates sharpen as HR & streams deepen

Stress (Σ)

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Window total

Work (kJ)

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Mechanical energy

Avg Power

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Rides with power only

Avg HR

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Rides with HR only

Daily · 7-day smoothing

Stress per hour

Output efficiency

Cost of work

Stress + kJ + hours

HR vs Power · zones + trendline