Until now, active altitude training was often a struggle – and by that, I don’t mean the burning muscles, but the equipment. Anyone who has ever tried to do a high-intensity interval on an ergometer with an oxygen mask knows the problem: the masks are never completely sealed, they press on your face, sweat collects underneath, and your field of vision is severely restricted. At www.hoehenzelt.ch, we are ending this era of compromises.
Space for Real Performance: The Mobile Altitude Office
Our new large tent (2.35 m x 2.35 m x 1.95 m) redefines “home camping.” With a volume of around 10 m³, we create a space where you can move freely. This is not just a place to sleep (“Sleep High”), but a multifunctional performance center.
The logic is simple: to achieve the optimal hypoxic dose, 12 hours of exposure within 24 hours is the gold standard goal. With the large tent, this is no longer a logistical challenge. You can place your desk inside, move your office to altitude, and work while your body produces red blood cells. This way, you effortlessly extend your time under hypoxia without sacrificing your daily routine.
Active Training: The 4000-Meter Limit
The science is clear here: active training at altitude (“Train High”) is a massive booster, but only if the intensity is right. In our tent, we reach altitudes of over 3000 m within just 90 minutes.
We follow protocols that go up to a maximum of 4000 m. Why not higher? Because above 4000 m, the performance on the ergometer drops so dramatically that the training stimulus for the muscles becomes too low. We are looking for the “sweet spot”: maximum hypoxic load combined with high mechanical stress. I follow these protocols myself – they are painful, they push you to the limit, but they shift your boundaries in a way that normal training at sea level never could.
Measurement is Knowledge: MOXY instead of just Pulse Oximetry
Control is crucial for success. It is perfectly sufficient to train 3 times a week for 75 minutes at a defined oxygen saturation (SpO2) on your finger. But those who want to perfect the bio-logic go a step further: we use the MOXY sensor.
While the pulse oximeter on your finger only shows what reaches the blood, the MOXY measures oxygen saturation directly in the working muscle using Near-Infrared Spectroscopy (NIRS). This is the most honest form of performance control. We see in real-time how much oxygen your muscle consumes and how quickly it regenerates. Training in the large tent without a mask allows for natural breathing and full concentration on this data.
My conclusion: The 10 m³ tent is the answer for anyone who’s tired of excuses and uncomfortable masks. Whether as an altitude office for accumulating hours or as a training arena for high-intensity sessions – we control the air so you can control the results.
Yours, Roy