CIRCADIAN PERFORMANCE LAB
Question 1 of 5 (20%)
Circadian Cognitive Peak & Ultradian Sync Test — Select the option that most accurately reflects your natural response.
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Scenario #1
If you had zero alarms or obligations for 7 days, when would you naturally wake up feeling 100% rested?
💡 Context: Determines endogenous melatonin offset and suprachiasmatic nucleus (SCN) phase.
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Why This Metric Matters (Endogenous Phase Marker)
Genetic polymorphisms in the PER2 and CRY1 clock genes shift circadian phase by up to 3.5 hours between extreme early and late chronotypes.