From Founder-Led Testing to Performance Technology
RedPlus was initiated, developed, and first tested by founder Niels Kristian Andersen.
After a period of illness in 2024, Niels Kristian Andersen began personal breath-hold testing as part of his return to performance.
What started as a recovery experiment shifted his focus toward hypoxia, SpO₂ response, and controlled breath-hold exposure — and after the 2024 season, became the starting point for RedPlus.
After the season, further analysis suggested that the sessions may have had a greater physiological and performance impact than first expected.
From October 2024 to early 2025, Niels carried out a deeper and very structured investigation into hypoxia, SpO₂ response, red blood cell adaptation, recovery patterns, and endurance performance. This became the foundation for the structured RedPlus hypoxic protocol and the first app concept.
The method was then tested extensively through controlled self-experimentation. Over nine months, the test project included 274 sessions and more than 3,300 hypoxic activations, generating a broad set of performance and physiological markers.
In May 2025, the RedPlus concept was filed for patent protection, and the app development process moved forward with the technical team.
Daniel Healy was later brought in as sport science support to review available literature, monitor parts of the process, and help assess how the observed data aligned with existing hypoxia research.
Today, RedPlus is being developed as a performance app for athletes and coaches — turning controlled hypoxic exposure into structured data, weekly targets, recovery feedback, and long-term training insight.
Timeline
2024 — The Starting Point
After a period of illness, Niels Kristian Andersen began using breath-hold exercises as part of his own recovery and performance routine.
Late 2024 — Deeper Research
Further analysis led to a focused investigation into hypoxia, SpO₂ response, red blood cell adaptation, and endurance performance.
Early 2025 — Protocol Development
The first structured RedPlus hypoxic protocol was developed and tested through controlled self-experimentation.
2024–2025 — Extensive Testing
Over nine months, the test project included 274 sessions and more than 3,300 hypoxic activations, generating a broad set of performance and response data.
March 2025 — Patent Filing
The RedPlus concept was filed for patent protection, and development of the app-based performance tool moved forward with the technical team.
2025 — Scientific Review
Sport science support was added to review available literature and assess how the observations aligned with established hypoxia research.
Today — App Testing
RedPlus is now being tested by endurance athletes, from professional cyclists to elite and ambitious amateur performers.