The Home Advantage
Josh Kersten is bringing the machinery of recovery into private residences. His more persuasive proposition is knowing what to do with it.
At Saint Haven in North Sydney, Josh Kersten looks entirely at home. He gives me a tour of the members’ club, where he has supplied some of the technology, and seems to know someone at every turn. The greetings continue when we break for lunch in the dining room that doubles as its social hub. Prime Platinum’s founder orders salmon. I have a glass of wine, apparently the only person there inclined to do so. Kersten, 40, is conspicuously fit, though he is less interested in discussing his physique than the systems that might help other people hold on to theirs.
His company designs high-end recovery and performance spaces for private homes, clubs, hotels, and other facilities, bringing advanced recovery technology into environments conceived around the discerning people who use them. Someone must determine what belongs in the space, make it comfortable to use and explain how it fits into a week already crowded with work, travel, and family. ‘Anyone with enough money can buy the equipment,’ he says. ‘The difficult part is knowing what to buy.’
The idea carries force for people accustomed to having almost everything organised for them, save perhaps their own health. Kersten sees clients who have been disciplined about building businesses and comparatively casual about measuring their sleep, fitness, or recovery. Prime Platinum’s answer is to plan the room, select and install the technologies, train the client or their staff and develop a practical routine, sometimes alongside a client’s doctor or other qualified practitioner. It also services the equipment. For the owner, that means one team bringing the space and its workings together.
Kersten grew up in a small rural town on New Zealand’s North Island. Before founding Prime Platinum nearly nine years ago, he drove trucks, built another business, and trained seriously in martial arts. The demands of that life led him first to saunas and cold exposure, then to a US company working in recovery technology. What began as an equipment business now brings together complete wellness environments, including Saint Haven, ELYX Life at Raffles Singapore, and a private residence in Colombo spanning more than 15,000 square metres, for which Prime designed the wellness space. The address and dimensions change; the task of making everything work together remains.

In one recent house, the owner had already tried various treatments at clinics. He understood the appeal, Kersten says, but rarely had time to travel between them. Prime brought a hyperbaric chamber, cryotherapy, a full-body red-light bed, a sauna, and a gym into one private environment, then worked out when he could use each. Cryotherapy might fit before the office or on returning home at lunch. Its chamber delivers cold, dry air in a three-minute session. According to Kersten, the owner now uses the space daily. The distinction is less about the number of machines than removing several small obstacles to using them.
Kersten has put the same thinking to work in his own facility, into which he says he has invested about NZ$2 million. Its pool, cold plunge, sauna, cryotherapy, and hyperbaric chambers sit alongside jiu-jitsu mats and a gymnastics rig. A laboratory of sorts, it is also where he tests the programmes he discusses with clients, fitting them around the demands of his own life. These days he favours rings, mobility work and controlled movement alongside strength and cardiovascular training. He wants to stay capable, not merely look the part.
That emphasis became personal after years of apparently doing the right things. Despite training and eating well, he began to feel exhausted and struggled to recover. He recalls falling asleep on the couch during the day and finding ordinary tasks harder to manage. Blood tests identified issues to address. Kersten credits the resulting changes with a marked improvement in his energy and concentration. It reinforced his interest in assessment: even someone this committed to training could miss what needed attention.
His most demanding test involved 60 two-hour hyperbaric sessions, or 120 hours in all, while he ran his businesses and kept up with training and family life. Kersten says the programme followed a published research protocol. He took baseline measures, including blood tests, body composition, and cardiovascular fitness, and repeated relevant assessments afterwards. Kersten reports improvements in energy and resistance to fatigue, especially early in the programme and again some weeks after it ended. He says several tracked measures also moved favourably. Those are his reported outcomes, rather than a promise of what a client will achieve. But the commitment gives him a useful perspective on what he is asking of them.
By the 20th session, the time involved was beginning to tell. ‘Had I not been focused on understanding the complete protocol,’ he says, ‘I may not have finished it.’ A client might have room for a chamber, but finding two hours a day to spend inside it is another matter. Kersten’s team must therefore consider a protocol’s demands as carefully as its hardware and involve appropriate medical supervision where needed.
Prime concentrates on four principal recovery technologies: hyperbaric oxygen, photobiomodulation, whole-body cryotherapy and traditional sauna. Kersten says he is selective about adding products and regards them as additions to exercise, nutrition, and sleep, rather than substitutes. Each has to be considered on its own terms, with the intended use, protocol and individual informing the recommendation. Prime is also discussing a possible equipment contribution to research with Melbourne’s National Institute of Integrative Medicine, an arrangement Kersten hopes to finalise by year-end.
Kersten is developing a platform to connect assessment, professional guidance, and ongoing measurement with the technology. He hopes to launch it by early next year; the details remain under wraps. The ambition is to give the owner more than a finished room: a plan that can be reviewed as their needs and measurements change. It is a service proposition as much as a technological one. Back at Saint Haven, I finish my wine. If Kersten is taking mental notes, his platform could learn something from his poker face.
This story appears in the SPRING 2026 issue of Robb Report Australia & New Zealand. Click here to subscribe.
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