Light and setup check
Three questions on the first half of the course - light, the room, and the night-time wake-up.
A short checkpoint before the second half. These three cover the ground from the first three lessons: what actually sets your clock, which parts of the room are worth changing, and what to do at three in the morning.
Get all three and the rest of the course opens. Miss one and the explanation will tell you which lesson to look at again.
1. You work indoors and wake at seven. What is the single most useful change to the morning?
Outdoor light is an order of magnitude brighter than indoor lighting, even on an overcast day. Ten minutes of it does more for your clock than any lamp.
2. Which room change tends to matter least?
A mattress that is not actively uncomfortable is close to neutral. Temperature, light, and the readable clock all change sleep more than the surface you lie on.
3. You have been awake for twenty minutes in the middle of the night. The move that keeps this from becoming a habit is:
Lying awake teaches your brain that bed is where you are awake. Getting up breaks the association, and returning only when sleepy rebuilds the right one.
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