Sleep Guides
Better sleep does not come from gadgets — it comes from understanding a handful of measurable things: how long you sleep, when, how consistently, and what your days are doing to your nights. These guides explain each of them properly, with sources you can check (NHS guidance and peer-reviewed research, not wellness folklore), and show how to act on them with nothing more than your phone.
Sleep Debt: What It Is, How to Calculate It, and How to Recover
The running shortfall between the sleep you need and the sleep you get — how to measure it, what it does to you, and the safest way to pay it back.
How it worksWhat Is a Sleep Score? How Drift Calculates Yours
No black box: the exact five components behind Drift's 0–100 score — duration, timing, consistency, quality and lifestyle factors — and how to raise each one.
Getting startedHow to Track Sleep Without a Watch or Wearable
Two-tap morning logging or automatic iPhone tracking via Apple Health — everything actionable about your sleep, no hardware required.
InsomniaHow to Keep a Sleep Diary (and What It Reveals About Your Insomnia)
The clinically recommended way to keep a sleep diary, the patterns it uncovers, and how diaries power CBT-I — the NHS-recommended insomnia treatment.
Put the guides into practice
Track your sleep free with Drift — no wearable needed. Score every night, watch your sleep debt fall, and build a diary worth showing your GP.
Drift is a wellness tool, not a medical device, and these guides are general information rather than medical advice. If you have persistent trouble sleeping, speak to your GP — see the NHS insomnia guidance.