Interventions &amp; Tools

The Best Time to Exercise for Sleep: Why Evening Workouts Are Mostly Fine

Regular exercise is one of the most reliable ways to sleep better, and the old warning to avoid evening workouts has largely not held up. What the research says about how exercise improves sleep, whether the time of day matters, and the one narrow exception, vigorous exercise finished right before bed, that can genuinely delay sleep onset.

How Long Does Melatonin Last? Onset, Duration, and Why Timing Beats Dose

Melatonin does not work like a sleeping pill, and its short pharmacokinetics explain why. What the research says about how fast it kicks in, how long it stays in your system, why a big dose does not last longer in a useful way, and why when you take it matters far more than how much.

The Best Sleeping Position: What the Evidence Says and Why It Depends on You

There is no single best position for everyone, but the evidence does favor some positions for specific problems. What the research says about side, back, and stomach sleeping for snoring and apnea, reflux, back and neck pain, and pregnancy, and why comfort and the position you actually stay in matter more than chasing an ideal you cannot hold.

What Does Melatonin Actually Do? The Hormone, Explained

Melatonin is the body's darkness signal, not a sedative. What the pineal gland releases at night, how it tells the clock it is night, and why that mechanism explains both its real uses and its limits as a sleep pill.

Dose-tested gear

Best Weighted Blankets for Sleep, 2026: Weight, Fill, and What the Data Shows

A weighted blanket is one of the few sleep tools with randomized-trial data behind it. The five blankets worth owning, the 10-percent-of-bodyweight rule, glass-bead vs plastic-pellet fill, and where the evidence stops.

Melatonin-Nebenwirkungen: was belegt ist und was nicht

Melatonin gilt als gut vertraeglich, aber es hat Nebenwirkungen: Tagesmuedigkeit, Kopfschmerzen und lebhafte Traeume, meist dosisabhaengig. Was in Studien tatsaechlich auftritt, warum hohe Dosen mehr schaden als nuetzen, ob Abhaengigkeit droht und fuer wen es nicht geeignet ist.

Tart Cherry Juice for Sleep: Dose, Melatonin Content, Evidence

Tart cherry juice is one of the few food-based sleep aids with human trial data, mostly because Montmorency cherries contain melatonin and support tryptophan. The dose the studies used, the modest effect size, why it works better for some people than others, and where the evidence stops.

Valerian Root for Sleep: Does It Work, Dose, Evidence

Valerian is the most popular herbal sleep aid, but the trial evidence is mixed and the study quality is uneven. What valerian is thought to do at the GABA system, the dose the trials used, why results are inconsistent, and how it compares with melatonin and magnesium.

Progressive Muscle Relaxation for Sleep: How It Works, Evidence

Progressive muscle relaxation (PMR) is a tense-and-release technique with decades of use as part of insomnia treatment. How the Jacobson method works, the evidence as a component of CBT-I, how to run a session before bed, and where it helps most.

Military Sleep Method: The Steps, and What the Evidence Shows

The military sleep method is a relaxation routine sold online as a way to fall asleep in two minutes. What the technique actually is, the arousal-lowering mechanism behind it, why the dramatic speed claim has no controlled evidence, and how it stacks against the levers that do work.

Dose-tested gear

Best Sleep Trackers 2026: Accuracy-Tested Against Polysomnography

Sleep trackers ranked by how well they actually agree with polysomnography, not by app polish. Total-sleep-time accuracy, where stage estimates break down, and the ring, watch, and under-mattress picks worth buying.

12 min read

Field guide

Herbal Sleep Aids: What the Evidence Shows for Valerian, Lavender and More

A ranked, evidence-first look at the plant-based sleep aids people actually try: valerian, lavender, chamomile, passionflower, hops, and lemon balm. What the trials found, the doses they used, and where the evidence runs thin.

11 min read

Dose-tested gear

Best Earplugs for Sleep 2026: NRR-Tested, Side-Sleeper Rated

Earplugs for sleep ranked by real-world noise attenuation, comfort for side sleepers, and whether you can still hear an alarm. Foam vs silicone vs wax vs masking buds, with the NRR numbers that actually matter.

11 min read