by Karin Rutten | Apr 11, 2019 | reviews
Dear Bas Rutten,I wanted to tell you how impressed I am with your O₂ Trainer. Since purchasing it, I have used it with my Krav Maga training. I have also used it with the Bas Rutten MMA Workout. What a challenging workout when combined with the O₂ Trainer!! I have...
by Karin Rutten | Apr 11, 2019 | reviews
One thing I can state is that with the first run of statistics, the ventilation improved significantly. Your original claims of increased ventilatory muscles were correct. These young ladies all improved their volume of air they could ventilate. We will continue with...
by Karin Rutten | Apr 5, 2019 | reviews
“This has helped my fitness to no end 10/10 would recommend very sturdy and adaptable to all fitness levels.”
by Karin Rutten | Mar 22, 2019 | reviews
“This thing is rough, working out with an o2 trainer, is not only good for your stamina, but it also helps your mental grit.”
by Karin Rutten | Mar 22, 2019 | reviews
“I have used the O2 Trainer since it’s release and am quite impressed with it. I use it for Krav Maga and Law Enforcement training. It has improved my breathing and overall training.”
