Performance powered by physiology. Not proxies.
Heart rate, HRV, pace, and power are useful outputs. But proxies. YNSYGHT anchors thresholds, fuel use, fatigue, and recovery to your internal metabolic state. In real time. Learning how your body responds with every session. Refining its guidance as you adapt.
Recovery Kinetics
Fatigue is mapped through changes in lactate behavior across sessions, building a high-resolution profile that guides load progression, recovery, and tapering while minimizing the risk of overtraining.
Lactate in Motion
Lactate is measured continuously. This live internal signal powers threshold detection, fatigue modeling, recovery scoring, and adaptive training, no lab required.
Fuel Economy
Fuel efficiency is measured continuously, revealing how your body shifts between fat and carbohydrate as intensity changes, and how that balance adapts as your metabolic performance improves.
Adaptive Programming
Training adapts to you. As thresholds rise, fatigue accumulates, or recovery slows, the system adjusts intensity, duration, and structure to match your current physiological state.
Threshold Intelligence
LT1 and LT2 are tracked as they shift. Training zones update automatically, so intensity always matches your current physiology, not outdated estimates or vague proxy prediction.
Performance Summary
Each session reveals exactly how your physiology responded, mapping threshold shifts, recovery rates, fuel usage, and fatigue, then translates it into clear direction for what to do next.
"It's like having a lab and a coach in the palm of your hand."