The Global Rest Index 2024

Sleep is a
Competitive Sport.

We track the world's most critical performance metric: rest. Who is winning the night, and what are the biological costs of losing?

View The Bracket Our Methodology

Current Standings

Updated: Q3 2024

01 New Zealand 7h 41m
02 Netherlands 7h 38m
03 Finland 7h 35m
...
62 Japan 6h 18m

The Deficit We Ignore

The global average sleep duration has dropped below 7 hours. We are accumulating massive cognitive and physiological debts. This isn't just about feeling tired; it's a measurable degradation in immune function, metabolic stability, and executive decision-making.

Data sourced from WHO & Independent Polysomnography Studies, 2019-2024

The Telemetry of Rest

Calculate Your Deficit →

Critical Failure

6.8h

The average weekday sleep duration for working adults globally, falling short of the recommended 7.5-8 hour baseline.

Efficiency Rating

82%

Average sleep efficiency (time asleep / time in bed). Elite performers target >90% to maximize recovery phases.

REM Targets

22%

Target percentage of total sleep time spent in REM. Crucial for cognitive consolidation and emotional regulation.

The Equipment: Structural Support

Your mattress is your playing field. Selecting the wrong firmness guarantees mechanical failure (back pain) and micro-arousals that shatter sleep architecture. There is no universally "best" mattress, only the correct match for your weight and primary sleeping position.

SIDE SLEEPERS Require pressure relief at shoulders/hips. (Softer, 4-6/10)
BACK SLEEPERS Need lumbar support without bowing. (Medium, 5-7/10)
STOMACH SLEEPERS Demand strict pelvic support to prevent hyperextension. (Firm, 7-9/10)

Read The Full Equipment Guide

Thermodynamics
of Sleep

Core body temperature must drop by 2-3°F to initiate and maintain deep sleep. A bedroom that is too warm is a biological roadblock.

Optimize Environment →

Room Temp (°F) Sleep Quality Impact

75°+

Severe Disruption

70°-74°

Suboptimal

65°-68°

Ideal Range

< 60°

Cold Disruption

"Sleep is the greatest legal performance-enhancing drug that most people are neglecting."

— Matthew Walker, PhD (Author, Why We Sleep)

Tactical Positioning

Lateral (Side)

Usage: ~60% of Adults

The most common and generally optimal position. Excellent for airway clearance (reducing sleep apnea risk) and glymphatic clearance (brain waste removal).

Advantage: Airway Management

Supine (Back)

Usage: ~10% of Adults

Best for spinal alignment if supported correctly, but significantly increases the risk of snoring and obstructive sleep apnea due to gravity on the airway.

Advantage: Spine Alignment

Prone (Stomach)

Usage: ~16% of Adults

Generally considered the worst position. Forces cervical rotation (neck twisting) and promotes lumbar hyperextension, leading to chronic pain.

Warning: Structural Strain

Detailed Position Analysis →

Training Tools

Interactive calculators to calibrate your rest. No sign-ups, no data harvesting. All processing happens in your browser.

Sleep Debt

Calculate your accumulated deficit.

Caffeine Curve

Model clearance times for optimal dosing.

Bedtime Calculator

Reverse engineer your wake time by 90-min cycles.

Chronotype

Assess your biological circadian preference.

Temp Converter

C/F translations for global guidelines.

Alcohol Impact

Estimate clearance before REM disruption.

Melatonin Timing

Calculate the DLMO phase advance.

Snore Risk BMI

Calculate airway resistance correlation.

The Relegation Zone

Nations currently operating at severe sleep deficits, facing cascading public health consequences.

Rank	Nation	Avg Duration	Deficit
60	South Korea	6h 25m	-1h 35m
61	Saudi Arabia	6h 21m	-1h 39m
62	Japan	6h 18m	-1h 42m

View Full Bracket

Age & Architecture

Sleep architecture degrades with age. The elderly do not need less sleep; they simply lose the ability to generate it due to calcification in the brain's sleep-generating regions and weakening circadian signals.

Deep NREM sleep (stages 3 & 4) drops drastically after age 40, reducing the body's ability to repair tissue and consolidate memory.

Target vs Actual by Age

Adolescents (13-18) Target: 8-10h | Actual: 7.2h

Adults (18-64) Target: 7-9h | Actual: 6.8h

Seniors (65+) Target: 7-8h | Actual: 6.5h

The Physiological Toll of Debt

01

Endocrine Disruption

Leptin (satiety hormone) decreases, and ghrelin (hunger hormone) increases after just one night of short sleep. This drives craving for high-calorie, carbohydrate-dense foods.

02

Immune Suppression

Sleeping less than 6 hours per night makes you over 4 times more likely to catch a cold compared to those sleeping 7 hours or more, due to a massive drop in natural killer cell activity.

03

Cardiovascular Strain

During deep NREM sleep, heart rate and blood pressure drop, giving the cardiovascular system a necessary rest. Chronic sleep deprivation maintains a sympathetic nervous system (fight-or-flight) state.

Pro-Tip

Morning Sunlight Protocol

Viewing sunlight (not through a window) within 30-60 minutes of waking triggers a cortisol pulse that anchors your circadian clock and sets a timer for melatonin release ~14 hours later.

Clear day: 5-10 minutes
Overcast day: 10-20 minutes
Heavy cloud cover: 20-30 minutes

Photoreception dictates rhythm.

Light is the primary zeitgeber (time-giver). Your suprachiasmatic nucleus (SCN) requires high-lux photon contrast in the morning to start the biological timer, and absolute darkness at night to allow melatonin secretion. Screens destroy this contrast.

Frequently Argued Metrics

No. A tiny fraction of the population possesses a genetic mutation (DEC2) allowing them to survive on 6 hours without impairment. For the other 99%, subjective feeling adapts to deprivation (you forget what it feels like to be fully rested), but objective cognitive tests show consistent, compounded degradation.

Alcohol is a sedative, not a sleep aid. It knocks out your cortex, mimicking sleep, but it aggressively fragments your sleep architecture and blocks REM sleep. When the alcohol wears off, you experience a rebound effect, resulting in frequent awakenings.

Sleep is not a bank. You cannot accumulate a 5-hour debt during the week and pay it off with a marathon weekend session. Attempting this creates "social jetlag," throwing off your circadian rhythm for the start of the next week.

Data Aggregated From

WHO Stats (2023) CDC BRFSS Sleep Foundation JCSM

Sleep is a Competitive Sport.