# Neck Health Library — Pain, Posture & Appearance | Neckly Learn > 33 source-cited articles on neck pain, posture, neck muscles and neck appearance — the library behind the Neckly app. Canonical: https://neckly.app/learn/ --- ## Neck Pain - [Why does your neck hurt?](https://neckly.app/learn/whyNeckHurts): Most neck pain is muscular and habit-driven, not structural. What actually causes it, how to tell ordinary… - [What is forward head posture (tech neck)?](https://neckly.app/learn/forwardHeadPosture): Forward head posture is when your ears sit ahead of your shoulders instead of over them. Here is how to… - [Is cracking your neck harmful?](https://neckly.app/learn/crackingNeck): Occasional neck cracking is generally harmless, but the relief lasts minutes and the habit hides the real… - [How to choose the best pillow for neck pain](https://neckly.app/learn/bestPillow): The right pillow height depends almost entirely on your sleep position. Here is what height each position… - [Which sleep position is best for your neck?](https://neckly.app/learn/sleepPosition): Back and side sleeping both work well for the neck when the pillow height matches. Stomach sleeping is the… - [Why does neck pain cause headaches?](https://neckly.app/learn/neckHeadacheLink): Neck tension is a common headache trigger because the upper cervical nerves share a pathway with the head.… - [How jaw tension and neck pain feed each other](https://neckly.app/learn/tmjJawTension): The jaw and neck share muscles, nerves and posture. Clenching tightens the neck, and forward head posture… - [How stress tightens your neck](https://neckly.app/learn/stressNeckTension): Stress produces real, measurable muscle tension in the neck and shoulders. Why the trapezius is the body's… - [Why is your neck stiff every morning?](https://neckly.app/learn/morningNeckStiffness): Morning neck stiffness that eases within an hour usually points at your sleeping setup. Stiffness that lasts… - [When is neck pain serious enough to see a doctor?](https://neckly.app/learn/whenNeckPainIsSerious): Most neck pain is mechanical and improves with movement. These are the specific warning signs that mean… - [Neck and shoulder pain during pregnancy](https://neckly.app/learn/neckPainPregnancy): Posture shifts, ligament laxity and changed sleep positions all load the neck during pregnancy. What helps… - [Neck pain after 50: what changes and what helps](https://neckly.app/learn/neckPainOver50): Cervical spondylosis is present on scans in most people over 60, usually without symptoms. Why a scan… ## Posture - [How should you hold your phone to protect your neck?](https://neckly.app/learn/phonePosture): Raising your phone toward eye level removes most of the load on your neck. Why the angle matters more than… - [Why laptops are hard on your neck (and the cheap fix)](https://neckly.app/learn/laptopUsage): A laptop forces a choice between a neck-friendly screen and wrist-friendly keys. A stand plus a separate… - [What is the correct monitor height for your neck?](https://neckly.app/learn/screenHeightSetup): The top of your screen should sit at or just below eye level, about an arm's length away. Here is how to set… - [How to set up your chair so your neck stops hurting](https://neckly.app/learn/deskChairErgonomics): Your chair decides where your shoulders sit, and your shoulders decide what your neck does. A five-minute… - [How to set your car headrest and seat for your neck](https://neckly.app/learn/drivingHeadrestPosture): A car head restraint is safety equipment, not a pillow. Set too low it increases whiplash risk in a rear… - [Do standing desks help neck pain?](https://neckly.app/learn/standingDeskNeck): A standing desk changes which muscles get tired, not whether your screen is at the right height. What it… - [Neck pain from desk work: what actually fixes it](https://neckly.app/learn/deskWorkerNeckPain): Office neck pain is a dose problem, not a posture problem. The setup changes that matter, the movement… - [Neck pain from gaming: setup and session habits](https://neckly.app/learn/gamingNeckPain): Gaming combines a long session with intense focus, which removes the small position changes that normally… - [Neck pain for students: study setups and backpacks](https://neckly.app/learn/studentNeckPain): Long study sessions, a laptop on a bed, and a heavy backpack combine badly. The three fixes that matter… ## Muscles & Recovery - [Which neck muscles cause pain, and what each one does](https://neckly.app/learn/neckMuscles): Four muscle groups produce most neck pain: upper trapezius, levator scapulae, sternocleidomastoid and the… - [How to stretch your neck safely and correctly](https://neckly.app/learn/stretching): Neck stretching should feel like mild tension, never pain, tingling or dizziness. The right hold time, the… - [How often should you stretch your neck?](https://neckly.app/learn/stretchingFrequency): Little and often beats long and rare. Why several short sessions a day outperform one long one, and what a… - [Breathing techniques that release neck tension](https://neckly.app/learn/breathingTechniques): Shallow chest breathing recruits the neck muscles for a job the diaphragm should do. How to check whether… - [Heat or ice for neck pain? A simple rule](https://neckly.app/learn/heatVsColdTherapy): Ice for the first 48 hours after an injury, heat for stiffness and muscular tension. Why the common advice… - [How to carry a bag without wrecking your neck](https://neckly.app/learn/backpackPosture): A one-shoulder bag makes your neck muscles work continuously on one side. Weight limits, strap settings, and… - [How to strengthen your neck safely at home](https://neckly.app/learn/neckStrengthBasics): Neck strengthening needs almost no equipment and very little load. The four movements that matter, how much… ## Appearance - [What is face yoga, and does it work?](https://neckly.app/learn/whatIsFaceYoga): Face yoga is resistance training for facial muscles. The evidence is thin but not absent — here is what a… - [Do jawline exercises actually work?](https://neckly.app/learn/jawlineExercises): Jawline exercises can build muscle underneath, but they cannot remove fat above it. What determines a… - [Why a double chin forms, and what actually helps](https://neckly.app/learn/whyDoubleChin): Submental fullness has several causes — body fat, genetics, age-related skin laxity and posture — and each… - [How posture changes your jawline and profile](https://neckly.app/learn/postureJawlineLink): Head position changes the visible jaw-to-neck line more than any facial exercise. Why the effect is… - [How long until neck exercises show results?](https://neckly.app/learn/resultsTimeline): Different outcomes arrive on different schedules: relief in weeks, mobility in a month, endurance in months.…