How Your Lungs Work: A Plain-English Guide to Breathing
A clear, jargon-free explanation of how air travels from your nose to your bloodstream and why every part of that journey matters for everyday breathing.
Read articleEvidence-based guides written by PBTWeb’s specialist research teams and checked by a second editor.
A clear, jargon-free explanation of how air travels from your nose to your bloodstream and why every part of that journey matters for everyday breathing.
Read articleThe physiological differences between breathing through the nose and the mouth, what chronic mouth breathing does over time, and practical ways to switch back.
Read articleA plain-English tour of the three stages of memory, why most 'forgetting' is a failure of attention, and what that means for anyone trying to remember more.
Read articleEveryone forgets names and keys. Here is how clinicians separate normal age-related change from mild cognitive impairment and dementia, and the reversible causes worth ruling out.
Read articleHow to relearn breathing from the diaphragm, why it calms the nervous system, and a five-minute daily routine that works lying down, sitting or standing.
Read articleWhat box breathing is, why first responders and athletes use it, how to do it correctly and when to choose a different technique instead.
Read articleThe simplest technique in pulmonary rehabilitation, pursed-lip breathing slows the exhale and keeps airways open. Here is the method, the science and the situations it helps most.
Read articleThe brain depends on a constant supply of oxygen-rich blood. Here is how cerebral blood flow works, what reduces it and the evidence linking circulation to mental performance.
Read articleThe two amino acids behind most nitric-oxide supplements, how they differ, the doses used in clinical studies and the interactions every user should know before taking them.
Read articleBeta-alanine is best known in sports nutrition. Here is what it does, why the tingling happens at high doses, and what small amounts in cognitive formulas can and cannot do.
Read articleMost people spend 90 percent of their time indoors. Here are the pollutants that build up inside a home and the seven changes with the best evidence behind them.
Read articlePollen, mould and dust mites make breathing harder for millions. Here is a calendar of what triggers when, the habits that reduce exposure and when to see a doctor.
Read articleToo-dry air irritates the airways; too-damp air breeds mould and dust mites. We explain the ideal indoor humidity range, how to measure it and how to use humidifiers safely.
Read articleWildfire smoke, traffic haze and ozone days are becoming more common. Here is how to read the Air Quality Index and the steps that genuinely reduce what reaches your lungs.
Read articleVitamin B3 powers the coenzymes behind cellular energy. We cover what niacin does for the nervous system, how much adults need, why high doses flush and what a modest supplement dose provides.
Read articleThe brain runs on glucose but hates swings. We explain how spikes and crashes affect attention and memory, and the meal patterns that keep the supply steady all day.
Read articleThe MIND diet is the best-studied eating pattern for cognitive ageing. Here are its ten foods to favour, five to limit, the size of the effect in research and how to start.
Read articleDHA makes up a large share of the brain's fat. We look at the difference between dietary fish and capsules, the doses used in cognitive trials and who benefits most.
Read articleLow B12 causes fatigue, fog and memory problems that can be mistaken for ageing. We cover who is at risk, how it is tested and why correcting a deficiency matters more than any other brain supplement.
Read articleMullein has a two-thousand-year record in folk respiratory medicine. Here is what that history says, what laboratory research has found and where the evidence stops.
Read articleGinger is one of the most-studied botanicals in the world. We look at its airway-relaxing compounds, the doses used in research and the one interaction every user should know.
Read articleMemories are stabilised while you sleep. We explain what deep sleep and REM each do, how little sleep it takes to impair learning, and the evening habits that protect the process.
Read articleFocus is a trainable skill, not a personality trait. Here are the mechanisms of attention, why phones erode it, and the practical protocols with evidence behind them.
Read articleCaffeine borrows energy from tomorrow. We look at how it works, why tolerance builds, and the stimulant-free routes to steady mental energy that research supports.
Read articleThe 3 p.m. slump has identifiable causes: circadian dips, blood-sugar swings, dehydration, sitting, poor sleep, screens and low circulation. Here is how to tell which one is yours.
Read articleLemon and vitamin C are folk-medicine staples for colds and chest complaints. We explain what vitamin C genuinely does, what the trials show and how much a botanical extract can provide.
Read articleThe airway lining depends on water to keep mucus thin and cilia moving. Here is how dehydration affects breathing comfort and how much fluid is actually enough.
Read articleA slumped spine compresses the lungs and switches off the diaphragm. Here is the mechanics behind it, what research measures and simple fixes for desk workers.
Read articleExercise does not make the lungs bigger, but it transforms how well you use them. Here is what actually improves, the best activities for breathing fitness and how to start safely.
Read articleBreathing changes during sleep, and problems that start at night often show up as daytime fatigue. We cover snoring, sleep apnoea warning signs and the bedroom habits that help.
Read articleFrom the first twenty minutes to twenty years later, here is what the research shows about lung recovery after quitting, plus the free resources that double your odds of success.
Read articleLung cleanses, detox teas and 'flush the toxins' routines are everywhere online. We explain why the lungs do not work that way and what the evidence says genuinely helps.
Read articleAerobic exercise is the single intervention with the most consistent evidence for memory and brain structure. Here is what it changes, how much is needed and how to start if you are not active.
Read articlePeople with more education, complex work and active social lives show less cognitive decline for the same brain changes. We explain the reserve concept and the activities that build it.
Read articleShort bursts of stress sharpen attention, but chronic cortisol damages the memory system. We explain the mechanism and the recovery practices with the best evidence.
Read articleMild dehydration measurably impairs attention, memory and mood before you feel thirsty. Here is the research, the warning signs and a practical fluid plan for desk workers and older adults.
Read articleNo food cures lung disease, but dietary patterns are consistently linked to better lung function. We summarise the evidence on fruit, vegetables, omega-3s, antioxidants and the foods to limit.
Read articleMemory and focus supplements are a crowded market. Here is a step-by-step method for reading the supplement facts panel, spotting proprietary-blend tricks and judging whether the doses mean anything.
Read articleBefore you buy any lung or breathing supplement, run it through these seven checks: full ingredient list, blend transparency, delivery route, claims, manufacturing, guarantee and price per serving.
Read articleMany memory supplements list a blend total instead of individual doses. We explain the rules, the arithmetic sellers rely on, and how to use a fully disclosed label as a comparison tool.
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