Mean heart rate by hour of day (hr_hourly.csv)
Individual participant traces (gray), group mean (blue), and ±1 SD shaded band. Heart rate follows a clear circadian pattern, reaching its nadir around 4–5 AM and peaking in the mid-to-late afternoon.
N = 41 participants · Feb 25 – Apr 30, 2025
Individual participants
Group mean
±1 SD
Mean hourly step count by hour of day (steps_hourly.csv)
Individual participant traces (gray), group mean (green), and ±1 SD shaded band. Activity is concentrated between 6 AM and 9 PM, peaking in the late afternoon.
N = 43 participants · Feb 25 – Apr 30, 2025
Individual participants
Group mean
±1 SD
Mean sleep stage duration by hour of day (sleep_stages_hourly.csv)
Stacked bars showing mean minutes per sleep stage (Light, REM, Deep). Y-axis capped at 60 minutes. Only participants with valid sleep data included (≥4 hours on ≥70% of study days).
N = 37 participants with valid sleep data · Feb 25 – Apr 30, 2025 · Bar height capped at 60 min
Light
REM
Deep