Training Load is what you do
The stress of each session, measured by duration × intensity, adjusted for activity type. Two athletes might train for the same time, but if one goes easy and the other goes hard, the Training Load separates those realities.
Wellness score is how you feel
Your self reported snapshot of sleep quality, duration, mood, stress, recovery, physical test and health. It captures the athlete experience that no wearable can measure directly.
PEAK^ score is how you’re responding
It combines the work you’ve done with how you’re recovering, assessing your Training Load, Wellness, and physiological data (like HRV, RHR, respiration). A high PEAK^ score says your system is adapting well; a low score warns you’re digging into reserves.
Training Load explains the demand, Wellness shows your perception, and PEAK^ score integrates everything to guide smarter decisions. All three matter, but the PEAK^ score is the compass that points you to whether today’s plan matches your body’s reality.