Stand near a waterfall for five minutes and you'll notice the air feels different, even without knowing why. Same thing in a forest after rain, on a stormy coastline, high in the mountains. That air isn't "lighter" in some poetic sense — it physically contains more negatively charged particles, anions. An air-conditioned office with a dozen monitors humming away has almost none.
The difference is real and measurable with an air-ion counter. The question is what that means in practice, and why a mineral that generates anions ends up woven into a shoe insole.
How It Works
An anion is simply an air molecule — usually oxygen — that has picked up an extra electron and become negatively charged. Electron attaches, anion is born. What that particle does afterwards in the atmosphere has been studied by physicists since the early 20th century.
Nature produces air ions several ways. Water friction and spray — the classic "waterfall effect," sometimes called the Lenard effect after the physicist who first described it: as a water droplet shatters into fine particles, lighter negative ions separate from heavier positive ones, and the air around a waterfall, surf, or fountain fills with anions. Ultraviolet light and cosmic radiation ionise air molecules in the upper atmosphere and at altitude, where the air is thinner. Lightning during a storm produces a brief, powerful burst of ions — hence that "fresh" smell after rain, ozone and a spike of anions arriving together.
There's also a mineral route — no water, lightning, or altitude required. Tourmaline carries a weak, permanent electric charge: the pyro- and piezoelectric effect, known to physics since the 18th century. Under heat or friction, a tourmaline crystal mildly ionises the air around it, releasing anions with no power source at all. Germanium works differently — it's about far-infrared radiation, not anions — but the two minerals frequently sit side by side in one product precisely because they solve adjacent problems with one material.
Air ions are measured in particles per cubic centimetre. Figures vary between researchers, but the order of magnitude is fairly consistent: an air-conditioned office runs at roughly 50–100 ions/cm³, an ordinary city park a few hundred, mountain or coastal air already climbs into the thousands, and right beside falling water the count can reach tens of thousands. The spread is enormous — which is exactly why the difference between a flat and a forest feels almost physical, not imagined.
There's a historical footnote worth mentioning: Soviet biophysicist Alexander Chizhevsky studied the effects of air ions on living organisms in the 1930s and coined the term "aeroionification." Some of his conclusions were later revised and disputed by the scientific community, and his famous "Chizhevsky chandelier" never received unambiguous clinical validation as a therapeutic device. What science hasn't disputed since is the underlying fact: ion composition in air is a measurable physical quantity, not a metaphor.
A modern flat or office is the mirror image of what Chizhevsky described. Air conditioning, concrete, synthetic materials, and electronics create an environment dominated by positive ions, with anions running an order of magnitude lower than in a forest or by the sea. Air-quality specialists sometimes use the term "unipolarity ratio" — positive ions to negative; ideally it sits close to one, while a typical office skews heavily positive. That's the physical basis for the familiar feeling of "stale" indoor air with no obvious smell or pollutant behind it — just a different ion composition.
Why the Body Needs This
Worth being honest here: air ions have been studied for decades, but science doesn't offer — and shouldn't offer — firm, drug-level clinical conclusions. This isn't a medicine. What gets described fairly consistently is a subjective sense of freshness, familiar to almost anyone who's stood by a waterfall or walked through a forest after rain.
That sensation isn't invented, and it isn't pure placebo either — the air's composition genuinely changes; the difference is simply perceived at the level of comfort rather than a measurable lab figure like blood pressure or heart rate. So WHIEDA doesn't claim an anion insole replaces a trip to the mountains or a walk by the sea. Put more honestly: a steady, local source of anions near the skin is a way of nudging everyday city life a little closer to the feeling that forest or ocean air gives, without needing to travel there daily.
The practical value lies in consistency. A mountain holiday happens once a year, if that. Tourmaline in an insole or a textile works every day, for as long as the item stays on you.
There's an evening angle too, rarely discussed directly. Fresh air is commonly associated with calm and easy sleep onset — not as a medical effect, but as an everyday association: sleep by the sea feels different from sleep in a stuffy flat after a long workday. If the anion component helps recreate even a fraction of that feeling at home in the evening, that's a modest, honest, practical benefit — no promises the product can't keep.
Who This Matters For
Anyone spending the working day indoors with air conditioning and electronics — which describes nearly every city office worker. Anyone living far from the sea, forest, or mountains, who rarely spends more than a couple of hours a week outdoors. Anyone who notices a subjective difference between "home" air in a flat and the air after a walk — a fairly common and entirely real experience, even if science hasn't broken it down into percentages yet.
Separately: anyone already using WHIEDA's thermal or circulatory products, such as anion insoles or the Wentun device. The anion component here works as a complement to the thermal effect, not a replacement for it — germanium provides warmth, tourmaline freshens the local environment around the foot.
And one more group: anyone who has tried an electric air ioniser and come away put off by the smell of ozone after an hour of running it. That's a common and fair complaint — cheap corona-discharge ionisers genuinely produce ozone as a by-product, and at high concentration it irritates the airways, solving one air problem while creating another. Mineral ionisation via tourmaline works differently.
Active vs Passive Ionisation
An electric ioniser generates a high-voltage corona discharge that strips electrons from air molecules across a whole room. It works fast and noticeably, but it needs a wall socket, filter maintenance, and — on budget models — produces that same ozone as a side effect.
Tourmaline works locally and without electricity: the piezoelectric effect from heat and friction ionises a thin layer of air right at the mineral's surface — a few centimetres around it, at most. It produces no ozone at all; the mechanism is purely electrostatic, with no discharge into the air. The trade-off is scale: this isn't a substitute for a whole-room ioniser, but a local, continuous source right at the skin — wherever you're wearing the insole or the tourmaline-woven textile, rather than wherever the socket happens to be.
How to Get More Anions in Everyday Life
The most reliable method is almost embarrassingly simple: spend more time near water and in forests. Even twenty or thirty minutes by a fountain, on a shoreline, or in a park after rain measurably changes the air composition around you.
At home and at the office, ventilation beats any gadget: outdoor air is almost always richer in anions than air that's been circulated by an air conditioner for hours on end. Large-leafed houseplants help a little through moisture evaporation, though the effect is modest and no substitute for an open window — don't expect one potted fig tree to do the job.
An electric ioniser is an option for anyone willing to monitor build quality and replace filters: models with a carbon filter and no ozone-generating function do the job honestly, but it's a separate purchase requiring a socket and desk space.
And then there's the mineral, passive route. Tourmaline woven into an insole or into fabric worn against the skin all day needs no socket, no reminder to switch anything on, no filter changes. Put it on in the morning, and the mineral is already working off your own body heat and movement for as long as you're wearing it.
Consistency matters more than any single day's intensity. A mountain trip delivers a strong but brief impression. An insole worn every weekday delivers a weak but constant background — and it's that constancy which usually produces a noticeable difference after a few weeks, not after one evening.
A Personal Note
For a long time I filed anion talk under wellness mysticism — somewhere near "charged water." I changed my mind after an ordinary trip to the mountains: three days out of the city, and on the fourth, back in the flat, that same "stale" air felt far more obvious than before — as if I'd simply grown used to it and stopped noticing. Not a controlled experiment, just a personal observation, but it explains why a difference in air-ion composition can be felt even when it's hard to pin down in numbers.
These days I open the window more often than I used to, and I wear anion insoles on working days — not expecting a miracle, but because it's exactly the kind of steady, low-level background that's easy to want and hard to organise for yourself otherwise.
Conclusion
An anion is a charged air particle, not an abstract "good feeling" lifted from a marketing brochure. It's born near water, from sunlight and lightning in nature, or passively, from body heat, out of tourmaline woven into fabric. Science is honest about the limits here: firm medical conclusions are thin on the ground, while the subjective sense of freshness is reproducible and familiar to almost everyone. That's exactly why WHIEDA uses tourmaline in its anion insoles — not as a replacement for a walk in the forest, but as a small, constant source of that same feeling on an ordinary working day.