Here is a sneak peek of MMA legend Bas “El Guapo” Rutten’s new device, called the O2 Trainer.

In an interview that I saw a while back, Bas Rutten speaking about having asthma as a kid and how he thought of the concept of increasing the bulk flow of air into his lungs and how that made him feel better. Little did he know that at age 15, he had a million-dollar idea. A few years later, here comes the Bas Rutten O2 trainer. Designed to strengthen the breathing muscles and simulating altitude training.

I first heard of the Bas Rutten O2 Trainer when I was researching for the Gas Mask Training for MMA article. Heard about it again via a couple of MMA forums and lastly, the Joe Rogan Podcast where Bas was the special guest.

The O2 trainer works with a mouthpiece and if you look at the photo below, you can see that there are many different square parts with a variation of hole sizes, and as each hole gets smaller, it becomes more difficult to breathe. This puts the body in a state of hypoxia, or oxygen deprivation. To learn more about altitude training simulation, click here.

There’s no exact release date for the Bas Rutten O2 Trainer just yet but with the release of Bas Rutten’s O2 Trainer and Sean Sherk’s Elevation Altitude Training Mask, I’m sure it won’t be long until more companies divulge themselves into altitude training simulation devices.

You can visit the O2 Trainer website at


  1. ldubs says:

    Its out now, has anyone used it yet?

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