Multi-device sleep scoring built from Sleep Duration, Sleep Efficiency, Sleep Consistency, Sleep Stage Breakdown, Sleep Stress, and overnight cardiac rebound. Track debt accumulation, sleep architecture trends, and what is actually moving your sleep quality.
Sleep Duration, Sleep Efficiency, and Sleep Stress are all leaning away from baseline, so tomorrow may feel harder than expected even if time in bed looked acceptable at a glance.
WALT recommends protecting bedtime regularity tonight, limiting late stimulation, and watching whether Sleep Efficiency and overnight heart-rate rebound rebound together.
Total time asleep
Time asleep compared with time in bed
Night-to-night regularity
Disruption and fragmentation
REM, Deep, and Light sleep architecture
Nighttime cardiac settling patterns
Autonomic rebound capacity overnight
Baseline overnight cardiac demand
Breathing-rate rebound context
Overnight temperature change from baseline
Cumulative deficit tracking
Restoration effectiveness
Overnight rebound signals
Mental performance estimate
Energy reserve level
Consistency of sleep onset timing
Consistency of wake timing
Night-to-night sleep duration stability
Body-clock midpoint stability
Sleep architecture directly drives your Readiness and Rebound capacity. Poor sleep ripples across Load tolerance, Stress response, Heart Health, and even Pace of Aging.
Multi-device fusion across sleep and rebound inputs
Rebound scoring integrated with sleep instead of split across apps
Body Battery and circadian context in the same experience
Start tracking sleep & rebound with VALT Health — free to get started.
