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Reputable
Study · 7 days
Recruiting now · Code NZZU

The Caffeine Curfew.

How does YOUR sleep respond to a noon caffeine cutoff? Track deep sleep, heart rate variability, and resting heart rate across 7 days.

Your Week

  • ☕
    Cut off by noon
    Enjoy your morning caffeine, then last sip by 12:00 pm.
  • 🚫
    Know what counts
    No coffee, tea, energy drinks, pre-workout, or half-caf after noon.
  • ⌚
    Wear your wearable
    Keep it charged and on, especially while sleeping.
  • 📱
    Check in daily
    ~1 minute in the Reputable app to confirm the curfew.
  • 🔄
    Repeat for 7 days
    Follow these steps every day of the study.
  • 👁️
    Monitor how you feel
    Everyone responds differently — contact support if anything feels off.
Duration
7 days
Effort
~1 min/day
Reward
Insights

Supported wearables

⌚ Oura⌚ WHOOP⌚ Fitbit⌚ Garmin⌚ Apple Watch
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No changes to your morning coffee

Keep your usual routine — just move the cutoff earlier.

Invite Code
NZZU