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Sleep Debt Calculator

Sleep debt is cumulative. If you need 8 hours but only get 6, you owe your body 2 hours. Calculate your total debt over the last 5 days.

Your Total Sleep Debt

+9 hours

You have a severe sleep debt. This level of deprivation causes significant cognitive deficits. Prioritize consistent wake times and use the ARC Recovery Protocol.

Stop paying back debt with interest

Binge sleeping on weekends to pay back debt actually causes Social Jetlag, making you more tired on Monday. The ARC app helps you recover safely by keeping your wake times consistent and optimizing your light exposure instead.

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What is Sleep Debt?

Sleep debt is the difference between the amount of sleep your body biologically needs and the amount you actually get. It is cumulative. If you need 8 hours of sleep per night but only get 6 hours on Monday, you start Tuesday with a 2-hour sleep debt.

Many people treat sleep like a bank account, assuming they can deposit extra hours on the weekend to clear the debt. However, circadian biology does not work this way.

The Myth of "Catching Up"

When you attempt to pay back a week's worth of sleep debt by sleeping in for 10 hours on Saturday and Sunday, you commit a secondary circadian offense known as Social Jetlag. This shifts your biological clock later, making it harder to fall asleep on Sunday night and guaranteeing you will be sleep-deprived again on Monday morning.

Research shows that while catch-up sleep can reduce daytime sleepiness, it does not reverse the metabolic disruption, insulin resistance, or cognitive deficits caused by chronic sleep debt.

How to Safely Recover from Sleep Debt

  1. Maintain Consistent Wake Times: Do not sleep in by more than 60 minutes on weekends, even if you are tired.
  2. Add Sleep at the Beginning: Go to bed 30-60 minutes earlier than usual rather than waking up later.
  3. Strategic Napping: Take a short 20-30 minute power nap before 3:00 PM to take the edge off fatigue without destroying evening sleep pressure.

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