Sleep Habits IQ: how it works
Ten questions about light, caffeine, routines and the bedroom. Score yourself and read why each missed answer matters. It is part of the free sleep & calm tools on Natural Knows, and it runs in your browser: no sign-up, and your answers stay on your device.
Each play draws 10 questions from a bank of 20, and the answers are shuffled, so the tool feels new when you come back. After the last question you see your score and a short explanation for every answer you missed.
Three questions from the bank
- What helps set your body clock most? Daylight in the morning. Morning daylight is the strongest signal for your internal clock.
- Roughly how long does caffeine stay active in the body? Several hours, often 5 or more. Caffeine has a long half-life, so an afternoon coffee can still affect the night.
- A good bedroom temperature for sleep is… Cool, around 16–19 °C. A slightly cool room helps the body's natural drop in temperature at night.
Educational information only, not medical advice. These tools do not diagnose sleep or mood problems. If poor sleep, low mood or worry last more than a few weeks or affect your days, talk to a doctor. If you ever feel unsafe, contact local emergency services.
Questions about this tool
Is the Sleep Habits IQ free?
Yes. It runs in your browser, there is no sign-up, and your answers are not sent anywhere.
Can I take it again?
Yes. Every play draws new questions from the bank and shuffles the answers, so your second result can show a different side.
Is this medical advice?
No. It is educational information about natural living. For any health condition, pregnancy, breastfeeding or medicines, ask a doctor or pharmacist.
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