This self-check looks at the everyday habits that make sleep easier or harder. Its ten questions cover your sleep timing (going to bed and waking at very different times, or sleeping late to “catch up”), what happens in bed (phones, laptops or TV, lying awake worrying or scrolling), what you have in the evening (tea, coffee, energy drinks or cola, heavy meals, smoking or tobacco), daytime naps, your bedroom, and taking sleeping pills or other medicines without a doctor's advice. The last question asks about a calm routine in the hour before bed, a habit that helps.
This is a habits check, not an insomnia test. If your habits look fine but you still sleep badly, the insomnia self-check looks at the symptoms themselves: difficulty falling asleep, waking at night and not feeling rested.