I Purchased the $3,000 Health Go well with That Electrocutes You. I’m Sending It Again

Putting on the $3,000 Katalyst swimsuit is like sliding round with an electrical eel. First you lay out the vest, shorts, and arm straps (on a towel in the event you don’t wish to make a large number) and spray their electrode pads with a whole lot of water. “More water is better,” Katalyst’s CEO Brendan Kennedy informed me. You then clip the vest and shorts collectively, making a single, dripping swimsuit. After wrapping these round your physique and zipping up, you placed on the arm straps and join them to the primary swimsuit with a pair of delicate cables. You slip a battery pack right into a pocket close to your thigh, snap its magnetic plugs to the vests and shorts, and also you’re able to work out, soaking moist and perhaps chilly in the event you took too lengthy to assemble the contraption.

The pitch is that Katalyst will primarily supercharge your exercises. The swimsuit electrocutes your muscle groups whilst you do fundamental actions alongside a digital teacher within the accompanying app. Think lunges, squats, and the motion of a deadlift. You can get the equal of a 2 hour power session in simply 20 minutes, Katalyst says. George Clooney has praised the swimsuit, telling Esquire “my arms are twice the size they’ve ever been. It’s crazy.” Bloomberg Businessweek has covered the swimsuit too, writing, “here’s the thing: The Katalyst suit worked.”

I already personal a bunch of train and wellness tech, from good swimming goggles to the Oura ring. I usually plan my exercise time as effectively as I can. That’s one purpose why my predominant type of train is rowing, which makes use of a whole lot of muscle groups directly, and why I generally put on resistance gloves throughout swimming to squeeze out as a lot profit as potential. So, as a software that promised super-efficient classes even when the worth tag is clearly insane, I actually wished to love Katalyst. I believed it could be the key to lastly branching out from rowing and swimming to extra strength-focused routines.

But it wasn’t. It gave me pins and needles in my ft for days at a time and made my limbs numb and chilly, derailed my different exercises, and it merely wasn’t enjoyable in the way in which good and long-lasting train habits ideally must be. Instead, slipping into the $3,000 cyber swimsuit for round a month made me reassess my obsession with health, optimization, and effectivity. It made me take into account which of these ideas have been truly serving to me, and which have been in the end holding me again. What the fuck am I even doing? I finally thought to myself, dripping water throughout my house flooring.

I wasn’t the one one. “Legit you are the craziest person I know,” 404 Media’s Emanuel Maiberg stated after I despatched a photograph of the soaking moist swimsuit to our group chat. They in contrast me to an Infinite Jest character, with Sam Cole saying “we’re laughing IRL over here.” Jason Koebler added: “As your friends and colleagues and cofounders. This is not normal. The bit has gone too far.” 

Katalyst is an electro muscle stimulation, or EMS, swimsuit. The pads ship electrical pulses that make your muscle groups contract. At first, because the swimsuit and app ramp you right into a exercise, the pulses really feel like a lightweight tingling sensation. Then, a strong block of electrical energy throughout your arms, legs, and abs. You moist the pads, and generally the bottom layer of shorts and a long-sleeve t-shirt, as a result of the water helps conductivity between the electrode and your pores and skin, Katalyst says.

“That was absolutely insane,” I texted the remainder of 404 Media after my first exercise.

At some factors, your limbs might lock in place because of the depth of the blast. I tweaked my settings so I might full the actions absolutely and with a great quantity of problem and resistance, whereas not finishing locking my legs or arms out. The app encourages and makes this simple to do: throughout a exercise there are buttons within the app you may shortly press to extend or flip down the depth of the pulses. The teacher within the pre-recorded video will usually deliver up the facility in the course of the exercise to succeed in an electrocuting crescendo. It can take a couple of of the advisable three or so exercises every week to search out your excellent baseline.

Katalyst’s instructors suggest you breathe out whereas the swimsuit pulses. You carry out a squat, or a lunge, or one other motion for 4 seconds whereas the swimsuit shocks you. Then you relaxation for 4 seconds. You preserve doing that by totally different motions and intensities. In 20 minutes, the exercise is over. 

This timesave is clearly the large attraction of the Katalyst; the concept which you could by some means squeeze hours of labor into mere minutes with out even leaving your private home. “I’d been trying to go back to the gym a dozen times over the preceding 2-3 years with no luck. The time savings/mental ease of EMS training really is a blessing,” AustinAfter40, a YouTuber who makes EMS-related videos, informed me in an e mail. Within the primary few months of getting an EMS swimsuit in 2023, Austin says he gained 10 kilos of muscle. In the years since that’s gone as much as 20 kilos, with out, Austin says, actually touching something heavier than a 15lb dumbbell. “My bone density has increased significantly, body fat has lowered, and back pain I’ve dealt with much of my life is now a distant memory,” he says.

If you scroll the Katalyst subreddit, you discover many individuals saying a lot the identical factor. But navigating the world of EMS can really feel just like the Wild West. Austin makes cash from his EMS-related movies with affiliate hyperlinks, so viewers must preserve that in thoughts when watching no matter swimsuit he’s at present making movies about even when the data is honest and useful (he has since moved onto TitanBody, a Katalyst competitor). The depth and metrics of EMS fits should not standardized, so that you don’t actually know what you’re getting. An depth ranking of, say, 200 on a Katalyst might be not going to be the identical on a TitanBody swimsuit. Or a VisionBody swimsuit. Or any of the opposite EMS swimsuit firms which have clearly purchased Google Search advert house while you search for something EMS-related. 

Katalyst is FDA-cleared. That is not the same as FDA-approved. The Katalyst swimsuit falls into Class II of the FDA’s totally different teams for units, placing it within the reasonable danger class. Being cleared means Katalyst can promote the swimsuit, however the FDA shouldn’t be saying everybody ought to slip it on.  

On the Katalyst subreddit, folks have traditionally complained in regards to the firm’s customer support or swimsuit supply occasions (the customer support was excellent for me, with a devoted Zoom name to speak by the problems I used to be dealing with). Kennedy, by his firm Mont y Mer, acquired Katalyst in 2025. He stated the earlier CEO and Katalyst’s founder, Bjoern Woltermann, had “essentially bankrupted the company twice in six years,” and had taken orders and cost from greater than 1,000 clients however hadn’t created any fits. Kennedy stated he then went around the globe assembly with totally different suppliers to supply these authentic 1,000 fits. For me, it took round 5 months for my swimsuit to reach once I ordered it in 2025. Kennedy stated Katalyst has stock now and has “sort of solved that problem.” Woltermann acknowledged a request for remark however didn’t present a response in time for publication.

Beyond the anecdotal, the science suggests EMS fits can work. Professor Yong-Seok Jee at Hanseo University, who has researched EMS, informed me in an e mail that whereas athletes often use EMS to focus on particular muscle teams, he says the fits may also assist regular folks. Like me, presumably. “For non-athletes or the general population, EMS can be particularly useful as a time-efficient and low-impact training option, especially for beginners, older adults, or individuals with limited mobility,” he continued. 

But EMS shouldn’t be some magic software you should utilize as a substitute of truly figuring out and exercising usually. “That said, EMS is not a shortcut or replacement for exercise. Its effectiveness depends heavily on appropriate intensity, supervision, and program design, and there are safety considerations (e.g., avoiding excessive stimulation),” Jee stated.

Casey Johnston, who runs the lifting-focused newsletter She’s a Beast and writer of A Physical Education, informed me in an e mail Katalyst is “definitely in no way a replacement or even effective complement to strength training.” 

“If anything, similar to the drag suit argument, wearing a thing like the Katalyst would probably hamper your ability to effectively learn strength training movements and form, which is a huge cornerstone of translating strength to real life, before it would be additive in any meaningful way with, I can’t put enough quotes, ‘muscle stimulation,’ or whatever term they use,” she added.     

“This suit looks like the biggest scam I’ve ever seen,” Johnston wrote. She pointed to the Relaxacisor, a tool from 1949 that blasted your abs with electrical pulses. “This thing is no different, and equally scammy,” Johnston stated.

I didn’t wish to exchange my present train regime of rowing and swimming 5 – 6 occasions every week with the Katalyst. I wished to fit it in. I’ve repeatedly injured myself with varied power routines, to the purpose the place I’ve needed to do bodily remedy and had medical procedures executed, so I wished Katalyst to complement my present train and get extra power in there. That didn’t work.

First, clearly, you ache after blasting your self with electrical energy. So a lot so that you simply (properly) must relaxation, but in addition a lot with the intention to’t then row or swim, even at a decrease degree. So I discovered myself not doing the 2 types of train I really like and get nice pleasure from and which have drastically improved my well being over time. 

Next, I began to primarily injure myself with the swimsuit. I usually received pins and needles in my palms and ft. One of the instructors within the app stated pins and needles in your palms can occur and may go away shortly. But mine would final for hours, and my ft a number of days. Then my limbs would really feel numb and I might be extremely chilly, a lot I might begin sneezing. Kennedy informed me getting pins and needles for this lengthy was “extremely abnormal.” I took his recommendation of wetting the pads much more, and even the bottom layer you placed on. I additionally did some exercises with out the arms turned on in any respect. That stopped the problem with my palms no less than.

But it nonetheless wasn’t working for me, mentally. It made me suppose what was I even doing this for. To be environment friendly for effectivity’s sake? 

There is one thing misplaced while you favor effectivity above all else. You lose the enjoyment of simply shifting in a method that feels good. You lose embracing the method of train itself when attempting to make the time spent as quick as potential. You lose sight of your precise objective with train, which for me is to maintain energetic and wholesome, not get insanely jacked. You lose that state of every part fading away, your thoughts clearing, endorphins flowing, and nothing else present however your physique shifting with out you even enthusiastic about it. What runners name the runners’ excessive, or what I get in rowing once I’m on an extended exercise. Maybe some folks do get that or really feel good with EMS fits. The in-app instructors stated you would possibly. I do know I didn’t get it with Katalyst.