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Some adults thrive on 7 hours; others need a full 9 to feel sharp. A small percentage of the population carries the DEC2 gene variant that allows healthy functioning on 6 hours — but this is genuinely rare. If you think you're one of them, you're probably just used to being sleep-deprived.","type":"text","version":1}],"direction":null,"format":"","indent":0,"type":"paragraph","version":1,"textFormat":0,"textStyle":""},{"children":[{"detail":0,"format":0,"mode":"normal","style":"","text":"The most reliable way to find your personal number: on your next vacation, go to bed at a consistent time and let yourself wake naturally (no alarm) for a few days. 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36:["$","div",null,{"className":"bg-white rounded-lg shadow-sm p-8","children":[["$","h2",null,{"className":"typo-large mb-6 text-mist-950","children":"Frequently Asked Questions"}],["$","div",null,{"className":"space-y-6","children":[["$","div","0",{"className":"pb-6 last:pb-0","children":[["$","h3",null,{"className":"text-lg font-medium text-mist-950 mb-3","children":"How is sleep debt calculated?"}],["$","div",null,{"className":"prose max-w-none text-mist-600","children":["$","$L33",null,{"content":{"root":{"children":[{"children":[{"detail":0,"format":0,"mode":"normal","style":"","text":"For each night, subtract your actual sleep from your target. If your goal is 8 hours and you slept 6, that's 2 hours of debt. This calculator adds that deficit across all seven days. So if you fell short by 1.5 hours on four nights and hit your target the other three, your weekly sleep debt would be 6 hours.","type":"text","version":1}],"direction":null,"format":"","indent":0,"type":"paragraph","version":1,"textFormat":0,"textStyle":""}],"direction":null,"format":"","indent":0,"type":"root","version":1}}}]}]]}],["$","div","1",{"className":"pb-6 last:pb-0","children":[["$","h3",null,{"className":"text-lg font-medium text-mist-950 mb-3","children":"Can you ever fully catch up on lost sleep?"}],["$","div",null,{"className":"prose max-w-none text-mist-600","children":["$","$L33",null,{"content":{"root":{"children":[{"children":[{"detail":0,"format":0,"mode":"normal","style":"","text":"Short-term debt (a few bad nights) can be recovered in 1–3 days of good sleep. Chronic debt that's built up over weeks or months is harder — a 2022 study found that even after a week of 5-hour nights, some cognitive measures hadn't fully recovered after several recovery nights. The most effective approach isn't a single marathon sleep — it's consistently sleeping slightly longer over an extended period.","type":"text","version":1}],"direction":null,"format":"","indent":0,"type":"paragraph","version":1,"textFormat":0,"textStyle":""}],"direction":null,"format":"","indent":0,"type":"root","version":1}}}]}]]}],["$","div","2",{"className":"pb-6 last:pb-0","children":[["$","h3",null,{"className":"text-lg font-medium text-mist-950 mb-3","children":"I sleep 6 hours and feel fine. Is that actually okay?"}],["$","div",null,{"className":"prose max-w-none text-mist-600","children":["$","$L33",null,{"content":{"root":{"children":[{"children":[{"detail":0,"format":0,"mode":"normal","style":"","text":"Probably not. Research from the University of Pennsylvania showed that people restricted to 6 hours per night for two weeks had cognitive impairment equivalent to someone awake for 48 hours straight — but they rated themselves as only \"slightly sleepy.\" Your brain adapts to impairment and stops alerting you. Feeling fine and being fine are two different things.","type":"text","version":1}],"direction":null,"format":"","indent":0,"type":"paragraph","version":1,"textFormat":0,"textStyle":""}],"direction":null,"format":"","indent":0,"type":"root","version":1}}}]}]]}],["$","div","3",{"className":"pb-6 last:pb-0","children":[["$","h3",null,{"className":"text-lg font-medium text-mist-950 mb-3","children":"Does sleeping in on weekends fix anything?"}],["$","div",null,{"className":"prose max-w-none text-mist-600","children":["$","$L33",null,{"content":{"root":{"children":[{"children":[{"detail":0,"format":0,"mode":"normal","style":"","text":"It helps, but only partially. Weekend recovery can reduce some effects of weekday sleep restriction, but it doesn't fully reverse the damage to attention, reaction time, or metabolic markers. A study published in ","type":"text","version":1},{"detail":0,"format":2,"mode":"normal","style":"","text":"Current Biology","type":"text","version":1},{"detail":0,"format":0,"mode":"normal","style":"","text":" found that weekend catch-up sleep didn't prevent metabolic disruption from a week of short sleep. Consistent nightly sleep beats weekend catch-up every time.","type":"text","version":1}],"direction":null,"format":"","indent":0,"type":"paragraph","version":1,"textFormat":0,"textStyle":""}],"direction":null,"format":"","indent":0,"type":"root","version":1}}}]}]]}],"$L38","$L39","$L3a","$L3b","$L3c","$L3d"]}]]}]
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38:["$","div","4",{"className":"pb-6 last:pb-0","children":[["$","h3",null,{"className":"text-lg font-medium text-mist-950 mb-3","children":"Why do I gain weight when I'm not sleeping enough?"}],["$","div",null,{"className":"prose max-w-none text-mist-600","children":["$","$L33",null,{"content":{"root":{"children":[{"children":[{"detail":0,"format":0,"mode":"normal","style":"","text":"Sleep deprivation increases ghrelin (hunger hormone) and decreases leptin (fullness hormone). The result: you eat more, crave worse foods, and your body stores more fat. Studies show that even moderate sleep restriction can increase daily calorie intake by 300–500 calories — mostly from carb-heavy, high-fat snacks. Over a few months, that's a meaningful amount of weight gain.","type":"text","version":1}],"direction":null,"format":"","indent":0,"type":"paragraph","version":1,"textFormat":0,"textStyle":""}],"direction":null,"format":"","indent":0,"type":"root","version":1}}}]}]]}]
39:["$","div","5",{"className":"pb-6 last:pb-0","children":[["$","h3",null,{"className":"text-lg font-medium text-mist-950 mb-3","children":"Does napping actually help, or does it just feel like it?"}],["$","div",null,{"className":"prose max-w-none text-mist-600","children":["$","$L33",null,{"content":{"root":{"children":[{"children":[{"detail":0,"format":0,"mode":"normal","style":"","text":"Both. A 20-minute nap between 1:00 and 3:00 PM genuinely improves alertness and performance for a few hours. But naps don't provide the same balance of deep sleep and REM sleep that a full night does. They're a useful tool for taking the edge off, but they won't erase significant weekly debt. Avoid napping longer than 30 minutes — you'll enter deeper sleep stages and wake up groggier than before.","type":"text","version":1}],"direction":null,"format":"","indent":0,"type":"paragraph","version":1,"textFormat":0,"textStyle":""}],"direction":null,"format":"","indent":0,"type":"root","version":1}}}]}]]}]
3a:["$","div","6",{"className":"pb-6 last:pb-0","children":[["$","h3",null,{"className":"text-lg font-medium text-mist-950 mb-3","children":"Can sleep debt actually kill you?"}],["$","div",null,{"className":"prose max-w-none text-mist-600","children":["$","$L33",null,{"content":{"root":{"children":[{"children":[{"detail":0,"format":0,"mode":"normal","style":"","text":"The data suggests it can raise your risk. A major study involving over a million participants found that consistently sleeping under 6 hours per night was associated with a 12% higher all-cause mortality risk. Under 5 hours, the risk climbs higher. The relationship isn't linear, and individual factors matter, but the pattern is clear and consistent across multiple large-scale studies.","type":"text","version":1}],"direction":null,"format":"","indent":0,"type":"paragraph","version":1,"textFormat":0,"textStyle":""}],"direction":null,"format":"","indent":0,"type":"root","version":1}}}]}]]}]
3b:["$","div","7",{"className":"pb-6 last:pb-0","children":[["$","h3",null,{"className":"text-lg font-medium text-mist-950 mb-3","children":"What's the difference between sleep debt and insomnia?"}],["$","div",null,{"className":"prose max-w-none text-mist-600","children":["$","$L33",null,{"content":{"root":{"children":[{"children":[{"detail":0,"format":0,"mode":"normal","style":"","text":"Sleep debt is the total deficit you accumulate from not sleeping enough — for any reason. Insomnia is a specific condition where you ","type":"text","version":1},{"detail":0,"format":2,"mode":"normal","style":"","text":"can't","type":"text","version":1},{"detail":0,"format":0,"mode":"normal","style":"","text":" fall asleep or stay asleep, even when you have the time and opportunity. You can have sleep debt without insomnia (you choose to stay up late) or insomnia without significant sleep debt (if you compensate with naps or schedule flexibility). If you're consistently struggling to fall asleep despite trying, that's worth discussing with your doctor.","type":"text","version":1}],"direction":null,"format":"","indent":0,"type":"paragraph","version":1,"textFormat":0,"textStyle":""}],"direction":null,"format":"","indent":0,"type":"root","version":1}}}]}]]}]
3c:["$","div","8",{"className":"pb-6 last:pb-0","children":[["$","h3",null,{"className":"text-lg font-medium text-mist-950 mb-3","children":"I work night shifts. How should I use this calculator?"}],["$","div",null,{"className":"prose max-w-none text-mist-600","children":["$","$L33",null,{"content":{"root":{"children":[{"children":[{"detail":0,"format":0,"mode":"normal","style":"","text":"Enter the hours you actually sleep in each 24-hour period, regardless of when they happen. If you sleep from 8 AM to 3 PM on a workday, that's 7 hours. The calculator doesn't care when you sleep — it cares how much. Shift workers often carry higher sleep debt because daytime sleep tends to be shorter and lighter. If your results show persistent high debt, it may be worth discussing schedule adjustments or sleep strategies specific to shift work with your doctor.","type":"text","version":1}],"direction":null,"format":"","indent":0,"type":"paragraph","version":1,"textFormat":0,"textStyle":""}],"direction":null,"format":"","indent":0,"type":"root","version":1}}}]}]]}]
3d:["$","div","9",{"className":"pb-6 last:pb-0","children":[["$","h3",null,{"className":"text-lg font-medium text-mist-950 mb-3","children":"How long does it take to recover from serious sleep debt?"}],["$","div",null,{"className":"prose max-w-none text-mist-600","children":["$","$L33",null,{"content":{"root":{"children":[{"children":[{"detail":0,"format":0,"mode":"normal","style":"","text":"That depends on how deep the hole is. A few bad nights can be resolved in a couple of days. A week of significant restriction (5 hours/night) may take a full week of adequate sleep to recover — and some cognitive measures take longer. Chronic debt built over months requires sustained, consistent improvement over several weeks. The key insight: steady progress beats dramatic one-time catch-ups.","type":"text","version":1}],"direction":null,"format":"","indent":0,"type":"paragraph","version":1,"textFormat":0,"textStyle":""}],"direction":null,"format":"","indent":0,"type":"root","version":1}}}]}]]}]
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