Mental Health

Sleep

6.2

Sleep: Why fixing sleep makes most things easier.

5 sections, about 10 minutes in total

7+ h

The adult recommendation is 7 hours or more a night (CDC).

1 in 3

1 in 3 US adults regularly gets less than 7 hours (CDC).

90 min

One sleep cycle lasts 90 minutes. You go through four to six of them a night, and deep sleep comes mostly in the first few.

Section 1 of 5:

Start with the signs

The signs of poor sleep.

Each one shows what is behind it and which habit helps most. Tap the signs you have to see why they happen.

Nothing you tap is stored. This is a mirror for you, not a form for us.

Section 2 of 5:

What the evidence says

What helps sleep, and what does not.

For long-term insomnia, the treatment with the most evidence is CBT-I, a short course of sleep training with a therapist. Pills and melatonin do less than people think. Morning light and a fixed wake time help. Alcohol and staying in bed longer make it worse.

The beliefMelatonin will fix my insomnia.
What the evidence saysMelatonin tells your body clock what time it is. It is not a sleeping pill. It can help with jet lag or a body clock that runs late. For long-term insomnia the evidence is weak.
The beliefI can catch up on sleep at the weekend.
What the evidence saysOnly a little. Two long nights do not make up for a week of short ones. Sleeping in also shifts your body clock, so Monday feels like jet lag.
The beliefA drink before bed helps me sleep.
What the evidence saysAlcohol helps you fall asleep faster. Then it breaks up the second half of the night and cuts deep sleep. You wake more and rest less.
The beliefMore hours in bed means more sleep.
What the evidence saysNo. Lying awake in bed is what feeds insomnia. Sleep training often does the opposite and limits time in bed for a while, so you are properly tired at bedtime. A regular schedule matters more than hours in bed.
The beliefSleeping pills are the real fix.
What the evidence saysNot for long-term insomnia. The American College of Physicians recommends CBT-I first, not medication. Pills can help short term, and that is a prescribing decision. They do not fix the pattern underneath.
The beliefMorning light changes my nights.
What the evidence saysYes, and it is well supported. Morning daylight sets the body clock that decides when you feel sleepy at night. It is free. On its own the effect is modest, but it adds up.

These summaries reflect the cited research and will change if the research changes. Educational coaching context, not a diagnosis or a treatment plan. Proper treatments exist for long-term insomnia and sleep apnea.

Section 3 of 5:

Your sleep system

Five inputs decide most nights.

Answer each question and the radar redraws. Finish them all and it names where to start.

1/5Same wake time, most days?

2/5Caffeine after 2pm, or long naps?

3/5Your bedroom: dark, cool, quiet?

4/5The hour before bed looks like…

5/5Morning daylight within an hour of waking?

Your profile

0/5 answered

ConsistencyPressureEnvironmentWind-downDaylight

An educational self-check of everyday sleep inputs, not a screening tool for sleep disorders. Chronic insomnia has a real first-line treatment (CBT-I, through a referral), and snoring with gasping or heavy daytime sleepiness is a sleep-study conversation regardless of any score here.

Section 4 of 5:

How sleep works

Two forces decide when you fall asleep.

Click through: pressure builds all day, and a body clock sets the timing. Every tip below comes from these.

Tap a step to open it. Each one carries the detail.

Why the standard advice works

Every evidence-backed habit below applies these mechanics: protect the pressure (caffeine timing, no long naps), anchor the clock (same wake time, morning light), reach the sleep window on time (a wind-down hour), and keep bed meaning sleep, not scrolling or lying awake worrying.

Section 5 of 5:

What happens while you sleep

The four stages of sleep, and what each one does.

Each night you cycle through four stages, about every 90 minutes, four to six times. Deep sleep comes mostly in the first half of the night. REM sleep comes mostly in the second half. Tap a stage to see what it does.

Tap a tab to open it. The detail lands here.

Stage lengths are typical adult figures and vary from person to person and with age. Sleep trackers estimate stages from movement and heart rate. They are useful for trends, not exact.

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