Training Load is what you do
Training Load measures the stress of each session using 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
The PEAK^ score brings everything together. It combines:
Training Load
Wellness inputs
Physiological data (such as HRV, resting heart rate, and respiration)
A high PEAK^ score suggests your body is adapting well to training. A low score signals that you may be drawing too deeply on your 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.