The name 温通 (wēn tōng) translates from Chinese quite literally: "to warm and to open." Warm the body — and open the meridians, the channels through which energy moves in traditional Chinese medicine. Two thousand years ago this meant burning mugwort over acupuncture points. Smoky, slow, impossible in a flat.
Wentun does the same thing. Without fire, without smoke.
It isn't a hot-water bottle or an electric blanket, though on the surface the logic looks similar — "it got warm." The difference is where the heat comes from and what it sets in motion. A hot pack warms the skin from outside. Wentun works the other way: it prompts the body to generate heat from within and carry it along the meridians from the feet through the whole body. Hence the name.
Why heat at all? TCM has a simple frame: cold and damp in the body mean stagnation — sluggish circulation, a slow metabolism, heaviness. Heat means movement. When the body is warm from within, blood flows more freely and tissues get more oxygen. Western physiology describes this in different words, but the gist is the same: comfortable deep warmth supports microcirculation. Wentun is built precisely around that idea.
The feet are no accident here. TCM calls them the "second heart." Dozens of acupuncture points linked to the internal organs converge on the sole, along with a dense network of nerve endings. When you warm the feet, you aren't working the skin of your legs — you're working the body's whole map, and thermal energy travels onward along the meridians. That's why Wentun is a footplate, not just a leg warmer.
How it works
Four technologies are combined inside the device. Not one gimmick, but four mechanisms that complement one another.
First, thermal radiation. A built-in energy-wave generator produces directed heat: bottom to top, inside to outside. The waves stimulate the acupuncture points of the feet and speed the movement of blood and cells. This isn't passive heating — it's active stimulation. The heat goes deep, rather than sitting on the skin as it does with an ordinary hot pack.
Second, far infrared radiation. This is the key part, and worth unpacking. The far infrared band sits at a wavelength of roughly 8–14 micrometres. Exactly the frequency at which the water molecules in soft tissue resonate most strongly. And the human body is 60% water. The wave penetrates a few millimetres into the tissue, sets the water molecules gently vibrating, and from that — from within, not from outside — the capillaries dilate. Blood flow picks up. Muscles are warmed gently and continuously, and fatigue eases. Here's the point not to muddle: Wentun works on far infrared, not on terahertz. Terahertz technology is a different WHIEDA device — the Cell Activator. Two different bands, two different devices. People confuse them constantly, and they are fundamentally distinct.
Third, LED light therapy. The device uses light at two specific wavelengths: red at 633 nm and blue at 415 nm. These wavelengths have long been used in skincare to support the skin — soothing it, helping it look more even, supporting its recovery processes with regular use. The light works at the surface, complementing the deep warmth of the infrared. Red penetrates a little deeper; blue works right at the surface.
Fourth, the plasma function. The device generates a high concentration of positive and negative ions that clean the surrounding air — the same anions you find in abundance beside a waterfall or after a thunderstorm. A trifle? Perhaps. But when you sit by the device for 30–40 minutes, the air around you really does feel fresher.
Then there's the warming gel. The set includes a gel with extracts of TCM medicinal plants: peach tree resin, Chinese angelica, ginseng, saffron, Sichuan lovage. Plus sodium hyaluronate. The gel is refined by micromolecular transdermal technology — meaning the particles are shrunk to a size the skin absorbs more efficiently. Applied to the feet before the session, it improves heat transfer and adds the botanical component. It's the same nanoscale principle: smaller particle, higher absorption.
Notice: none of this is mysticism. A thermal wave, water resonance, light of a specific wavelength, air ionisation. All physics, all measurable with instruments.
What it does
Let me say it plainly and honestly: Wentun is not a pill for everything and not a substitute for a doctor. It's a tool for a regular thermal practice. It does one big thing — warms the body from within and supports circulation. Everything else follows from that.
What people notice with regular use. Comfortable, deep warmth that lingers after the session — not "burnt and cooled," but a soft heat spreading from the feet through the body. A sense of warm extremities in those who are always cold. Muscles relaxing after exertion or a long day. Many report a calmer evening and easier sleep — a direct consequence of a body that is warm and relaxed.
The key word is regularity. Thermal practice works cumulatively. One session gives you pleasant warmth here and now. A lasting effect appears in those who do it systematically, not once a month. It's a marathon, not a sprint.
And an honest word on convenience. A session is 30–40 minutes of simply sitting. You can read, watch a film, work at your laptop. The device does everything itself: it has real-time body-contact detection that prevents burns, and dual overheat protection. The casing stays cool even during long use — up to 8 hours continuously. It's quiet, with a digital display, touch controls and a remote. Certifications: ISO 9001, ISO 14001, ISO 45001 and RoHS. The technical data is ordinary: 220 V, 350 W, about 4 kg. A normal household appliance to plug in — with serious engineering inside.
Who it's for
Not everyone. And here it's especially important to be precise, because the device has real contraindications.
Whom Wentun suits. People whose hands and feet are always cold, with sluggish peripheral circulation. People who sit a lot, or conversely stand a lot and feel heavy legs by evening. People recovering from physical exertion who want to relax the muscles gently. Older people for whom active movement is hard, while warmth and foot stimulation are available sitting down. Those who move little by circumstance rather than laziness — the device offers a gentle thermal load without a gym.
Who must not — and this is not a suggestion but a strict list. Pregnant women and children under 10. People with pacemakers or metal implants. Anyone with severe heart disease. During active bleeding. At a body temperature above 38°C. With breathing or consciousness disorders. And not within 5 hours of alcohol. If weakness or dizziness appears during a session — stop at once.
This isn't fine print for show. The device genuinely heats the body and affects circulation, so the contraindications deserve to be taken seriously. If you have a chronic condition, consult a doctor first and use the device as a supplement, not instead of treatment.
How to use it
The routine is simple. Gel on the feet, feet fully on the plate, choose a mode, sit for 30–40 minutes.
A few practical rules. Start on a mild setting. The device has several intensity levels — for the first sessions keep it low, let the body adjust, and raise it gradually. A common mistake is to go straight to maximum and get a jarring "buzzing" in the feet. This isn't a contest; stronger doesn't mean better.
The feet must sit fully on the plate — otherwise the heating is uneven and uncomfortable. Legs, knees and hands shouldn't touch each other during the session. Don't use it in the bathroom or in high humidity. Don't point the LED light at your eyes. Don't touch the working surface with metal objects.
Regularity beats duration. Thirty minutes every other day, steadily, beats two hours once a week. Thermal practice is about accumulation, not a record in one go. It's easy to tie the session to an evening ritual: home, gel on, sit with a book for half an hour.
A personal note. The first time, I was sceptical about Wentun — "so it's warm, so what." I only understood the mechanism by the third or fourth session. It isn't that the feet get hot. It's that the warmth genuinely travels further — by evening my hands, usually cool, stayed warm for hours after a session. Not an instant miracle. A calm, cumulative effect, exactly as the physics of far infrared promises. And yes — I appreciated that all 40 minutes can be spent simply sitting with a laptop. The device asks nothing of you; it works on its own.
Conclusion
Wentun joins a very old idea to very modern engineering. The idea — to warm the body and "open the meridians" — is thousands of years old in TCM. The engineering is far infrared at 8–14 µm, thermal stimulation of the feet, red and blue LED, air ionisation, safety sensors and certification.
It's neither a hot-water bottle nor esoterica. It's a thermal practice with clear physics: the wave resonates with the water in the tissues, capillaries dilate, warmth comes from within. With regular use — and with attention to the contraindications — the device does exactly what's claimed. It warms you for real, from the inside.
And to be clear once more: Wentun is far infrared. Terahertz is the Cell Activator, a different device. Don't confuse them when you choose.