The Edit: A Calmer Evening in Five Steps

In our view, most of what decides a night’s sleep happens before you get into bed. The hour or two after dinner is when the house either winds down or keeps humming. Small, repeatable cues help more than any single product, and this calmer evening routine is the one we keep coming back to.

None of it is a treatment for insomnia, and you do not need all five steps. Pick the two that fit your evenings and give them two weeks before you judge.

1. Bring the lights down, early

Light is a strong signal to your body clock. About three hours before bed, switch from overhead lights to a couple of low, warm lamps. Dim the screens you cannot put away.

It feels like a small thing, but it changes the mood of a room fast. It also gives every other step a setting to work in. If you read in bed, use a small warm bulb aimed at the page rather than a bright ceiling light.

2. Magnesium, if you take it, 30 to 60 minutes before bed

Plenty of people add a magnesium supplement in the evening. The most recent placebo-controlled trial we know of (one where some people get a dummy pill for comparison) was run at a German university. It gave 155 adults who said they slept poorly 250 mg of elemental magnesium as bisglycinate, a form of magnesium, 30 to 60 minutes before bed for four weeks. “Elemental” means the amount of magnesium itself, not the whole compound.

Insomnia scores improved more than with placebo, but the difference was small. It looked larger in people who ate little magnesium to begin with.

That is a reasonable template if you want to try it, with three guardrails:

• Food first. Seeds, nuts, beans, whole grains and leafy greens all count, and a supplement adds to what you already eat. Our nutrient lookup shows the recommended amount for your age and sex.
• Mind the upper limit. For adults, the NIH upper limit for magnesium from supplements is 350 mg a day. Higher doses can cause diarrhea, nausea and cramping.
• Check first. If you have kidney disease, are pregnant, or take antibiotics, osteoporosis drugs or diuretics, ask your doctor or pharmacist before you start. Those medicines can all interact with magnesium.

Wondering whether the form matters? We looked at the trials in our Ask the Editor post on magnesium at night, and our guide to magnesium glycinate covers dose and labels.

3. A warm shower, one to two hours before bed

Warm water raises your skin and core temperature a little. The drop that follows, as your body sheds the heat, seems to help sleep come on.

A small home study from Japan had 23 adults bathe 90 minutes to two hours before bed. A longer soak in a tub, which raised body temperature by about 0.9 °C, shortened the time it took to fall asleep compared with a shower alone. People also rated their sleep better.

So a bath is the stronger version, but a shower is the easy one, and on a weeknight easy wins. Make it comfortably warm rather than scalding and take a few extra minutes. Finish by smoothing a little oil or lotion onto damp skin. Our carrier oil comparison lists the lighter oils that will not leave your sheets greasy.

4. A soft lavender blend in the diffuser

Scent is one of the quickest ways to tell yourself the day is over. This is our evening blend for a typical 100 to 200 ml ultrasonic diffuser (the kind that turns water and oil into a fine mist), filled with water as the maker directs:

• 3 drops lavender
• 1 drop cedarwood

Run it for about half an hour while you read or tidy, then switch it off before you sleep. A room that smells faintly of lavender is the goal. If you can smell it from the hallway, use fewer drops next time, and open a window for a few minutes afterward if the air feels heavy.

Be realistic about what it does. The National Center for Complementary and Integrative Health says it is unclear whether lavender aromatherapy improves sleep. It also says lavender is considered possibly safe but can cause headache or coughing in some people. We treat it as a pleasant signal rather than a sleep aid.

Two cautions before you switch it on:

• Cats. If you share your home with a cat, read our Ask the Editor post on diffusing around cats first.
• Pregnancy and babies. If you are pregnant, breastfeeding or diffusing near a baby, check each oil’s page first. Our blend builder flags combinations that need extra care.

5. A cool, dark, quiet room

The last step of this evening wind-down routine happens in the bedroom itself. Cool the room slightly and block streetlight with curtains or an eye mask. Keep the phone charging across the room or outside it.

Leave the diffuser off overnight. If you wake at night, keep the lights off or use the dimmest lamp you have.

Putting it together

A typical evening might look like this: lamps down at 8, a shower at 9, a magnesium supplement at 9:45 if you use one, twenty minutes of reading with the diffuser running, lights out at 10:30.

Keep your wake-up time steady too, even at weekends. An evening routine works best when the morning end is fixed.

If poor sleep lasts more than a few weeks, or you snore heavily, wake gasping or feel exhausted during the day, talk to a clinician. A routine can make good sleep easier, but it is not a substitute for finding out what is keeping you awake.