https://www.longevitysleep.co.uk/assets/Glossary-B5WYEwfN.js

1import{j as e,m as r}from"./vendor-motion-DEChu8RX.js";import{r as h,L as i}from"./vendor-react-j-mrhLhJ.js";import{e as m,H as c,B as d,F as p}from"./index-BmJBNlQp.js";import{P as u}from"./PageBottomSections-CdqQ9MM7.js";import{M as g}from"./MedicallyReviewed-DghKJicF.js";import{B as y}from"./book-open-C-KuK1zl.js";import{A as f}from"./arrow-left-BkEmzGWc.js";import"./vendor-radix-C1wOSltO.js";import"./vendor-query-CEvb3ijA.js";import"./accordion-CAofgQ2b.js";import"./useRecentlyViewed-3LvD5SVB.js";import"./chevron-left-C3MdbXVH.js";import"./chevron-right-DfzytERA.js";import"./shield-check-KP2NoiG_.js";const n=[{term:"Mouth taping",short:"Placing a small piece of hypoallergenic tape over the lips at night to encourage nasal breathing instead of mouth breathing.",full:"Mouth taping is the practice of applying a strip of medical-grade, hypoallergenic tape across the lips before sleep. By gently sealing the mouth, it encourages breathing through the nose, which humidifies and filters the air, improves oxygen uptake, and typically reduces snoring and morning dry mouth. Longevity Sleep Tape includes a central breathing gap for safety."},{term:"Nasal breathing",short:"Breathing in and out through the nose, which filters, humidifies and warms air and boosts nitric oxide production.",full:"Nasal breathing is the physiological default for humans during rest and sleep. It filters particulates, humidifies and warms inhaled air, and produces nitric oxide in the sinuses — a molecule that dilates blood vessels and improves oxygen delivery. Consistent nasal breathing at night is associated with reduced snoring, improved sleep architecture and lower next-day fatigue."},{term:"Transdermal magnesium",short:"Magnesium absorbed through the skin, avoiding the digestive side effects of oral supplements.",full:"Transdermal magnesium refers to magnesium (usually as magnesium chloride) delivered through the skin rather than ingested. Absorption bypasses the gut, avoiding the loose stools that commonly follow oral magnesium citrate. Applied to areas with high skin permeability — such as the soles of the feet — it eases muscle tension, restless legs and supports parasympathetic nervous system activity before sleep. Longevity Sleep Butter delivers 400mg magnesium per serving transdermally."},{term:"Sleep latency",short:"The time it takes to fall asleep once you get into bed with the lights out.",full:"Sleep latency is the interval between lights-out and the onset of stage 1 sleep. A healthy adult typically has a sleep latency of 10–20 minutes. Latency under 5 minutes can signal sleep deprivation; latency over 30 minutes can signal insomnia or an over-active nervous system. Aromatherapy, magnesium and consistent wind-down routines are all shown to reduce sleep latency."},{term:"Sleep architecture",short:"The pattern and cycling of sleep stages (light, deep and REM) across the night.",full:"Sleep architecture describes how the brain moves through the four sleep stages — N1, N2, N3 (deep/slow-wave sleep) and REM — in roughly 90-minute cycles across the night. Deep sleep dominates the first half of the night and drives physical recovery; REM dominates the second half and drives memory consolidation. Disruptions from snoring, light exposure or nervous-system arousal fragment architecture even when total sleep time looks normal."},{term:"Circadian rhythm",short:"The body's internal 24-hour clock that governs sleep, alertness, hormones and body temperature.",full:"The circadian rhythm is a roughly 24-hour biological cycle regulated by the suprachiasmatic nucleus in the brain, entrained primarily by light. It controls the timing of melatonin release, cortisol peaks, core body temperature and alertness. Blocking blue light before bed, blackout sleep environments and consistent wake times all reinforce a healthy circadian rhythm."},{term:"Melatonin",short:"A hormone released by the pineal gland in response to darkness that signals it's time to sleep.",full:"Melatonin is a hormone produced by the pineal gland in response to falling ambient light. It doesn't cause sleep directly — it signals to the body that the biological night has begun, lowering core temperature and reducing alertness. Even brief exposure to bright or blue light in the evening suppresses melatonin production, which is why full blackout (via a mask like the Longevity Sleep Mask) preserves natural melatonin rhythms."},{term:"Snoring",short:"The sound of turbulent airflow through a partially obstructed upper airway during sleep.",full:"Snoring occurs when air passes through a narrowed or partially blocked upper airway, causing the surrounding tissue to vibrate. The most common causes are mouth breathing (which collapses the tongue backwards), nasal congestion, and a narrow nasal airway. Mouth tape addresses the first cause; nasal strips address the last two. Persistent, loud snoring can indicate obstructive sleep apnoea and warrants medical assessment."},{term:"Blackout",short:"Complete elimination of ambient light in the sleep environment to protect melatonin production.",full:"Blackout refers to the removal of all ambient light — streetlights, standby LEDs, sunrise — from the sleep environment. Even low-level light detected through closed eyelids suppresses melatonin and shortens deep sleep. A true blackout sleep mask (with contoured cups that don't press on the eyelids) is the most reliable way to achieve blackout without renovating a bedroom."},{term:"Parasympathetic nervous system",short:"The 'rest and digest' branch of the nervous system that must be dominant for sleep to begin.",full:"The parasympathetic nervous system is the branch of the autonomic nervous system responsible for slowing heart rate, dropping blood pressure and shifting the body into a rest state. Sleep onset requires parasympathetic dominance over the sympathetic ('fight or flight') system. Slow nasal breathing, magnesium, lavender aromatherapy and gentle massage all shift the balance towards parasympathetic activity."}],o={"Mouth taping":[{label:"Longevity Sleep Tape",to:"/products/sleep-tape"}],"Nasal breathing":[{label:"Longevity Sleep Tape",to:"/products/sleep-tape"},{label:"Longevity Breathe Tape",to:"/products/breathe-tape"}],Snoring:[{label:"Longevity Breathe Tape",to:"/products/breathe-tape"}],Blackout:[{label:"Longevity Silk Sleep Mask",to:"/products/sleep-mask"}],"Transdermal magnesium":[{label:"Longevity Magnesium Sleep Butter",to:"/products/sleep-butter"}],"Parasympathetic nervous system":[{label:"Longevity Magnesium Sleep Butter",to:"/products/sleep-butter"},{label:"Longevity Sleep Mist",to:"/products/sleep-mist"}],"Sleep latency":[{label:"Longevity Sleep Mist",to:"/products/sleep-mist"}],"Circadian rhythm":[{label:"Longevity Silk Sleep Mask",to:"/products/sleep-mask"}]},P=()=>(m({title:"Sleep Science Glossary — Key Terms Explained | Longevity UK",description:"Plain-English definitions of mouth taping, nasal breathing, transdermal magnesium, sleep latency, circadian rhythm and other core sleep-science terms.",path:"/glossary"}),h.useEffect(()=>{const t={"@context":"https://schema.org","@type":"DefinedTermSet",name:"Longevity UK Sleep Science Glossary",hasDefinedTerm:n.map(a=>({"@type":"DefinedTerm",name:a.term,description:a.short}))},s=document.createElement("script");return s.type="application/ld+json",s.id="glossary-jsonld",s.text=JSON.stringify(t),document.getElementById("glossary-jsonld")?.remove(),document.head.appendChild(s),()=>{document.getElementById("glossary-jsonld")?.remove()}},[]),e.jsxs("div",{className:"min-h-screen bg-background",children:[e.jsx(c,{}),e.jsx("main",{className:"pt-32 pb-24",children:e.jsxs("div",{className:"container mx-auto px-4 lg:px-8",children:[e.jsxs(r.section,{initial:{opacity:0,y:20}

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