Caffeine half-life: why 2pm coffee still hits bedtime

A 5-beat faceless video outline for “Caffeine half-life: why 2pm coffee still hits bedtime” in the Sleep and calm routines niche, derived from caption timing of 2 reference videos.

Angles

Cold-open on the concrete hook from the primary reference — Huberman Lab Clips leads with a scene, not a definition dump
Make the mechanism explicit with one visual beat: from the adenosine receptor? - Unfortunate things happen, and that's what we call the caff…
Contrast or scale-up using the second reference (Strange Humans): A cup at three in the afternoon is still around when you brush your teeth. Same drink. Sam…
Close on what the viewer can check themselves; original narration only — do not copy reference wording

Beat-by-beat structure

Hook (0:00–0:30): open on the puzzle of 'Caffeine half-life' in one image.
Setup (0:30–2:00): define the key terms in plain words; borrow structure from Huberman Lab Clips, not lines.
Mechanism (2:00–5:00): walk the cause-and-effect with one diagram; cite the evidence beat (from the adenosine receptor? - Unfortunate things happen, and that's w…).
Contrast (5:00–7:00): show the common myth or the second case from Strange Humans.
Recap card: three takeaways + one 'check this yourself' action. Original narration only.

Reference videos

Coffee & Sleep: How Does Caffeine Work & Its Effects on Sleep | Matt Walker & Andrew Huberman bFdBJ2v6sps
Why You Keep Drinking Coffee, Even When It Costs You Sleep 077ptmCKb7c

Method

yt-dlp VTT captions (manual/uploader only) → timed beat heuristics → editorial topic synthesis (no ASR). Structure only; write original narration.