Bas Rutten
A legendary mixed martial artist who co-developed and constantly used an inspiratory muscle training device.
Videos Mentioning Bas Rutten

Q&A with Tim — PR and Marketing Lessons, Time Dilation, Selling to the Affluent, and Much More
Tim Ferriss
Mentioned as having discussed the O2 breathing device with the speaker, advising not to overdo repetitions in the beginning.

UFC Hall of Famer Bas Rutten on Self-Defense, Savage Fight Stories, Breathing Techniques, and More
Tim Ferriss
Dutch-American actor, former mixed martial artist, kickboxer, professional wrestler, UFC Heavyweight Champion, and three-time King of Pancrase World Champion. Co-host of Inside MMA and commentator for Pride Fighting Championships.

Ryan Hall: Martial Arts and the Philosophy of Violence, Power, and Grace | Lex Fridman Podcast #125
Lex Fridman
A Dutch mixed martial artist, mentioned as an underappreciated innovator for his early use of heel hooks and understanding of grappling techniques like the 'gosh roll' for an armbar.

Dr. Kelly Starrett — The Magic of Movement and Mobility | The Tim Ferriss Show
Tim Ferriss
Famous fighter who introduced the O2 Trainer to Tim Ferriss and taught specific breathing exercises for frontal and back breathing, emphasizing their benefits for back soreness.

Breathing Protocols to Reboot Your Health, Fix Your Sleep, and Boost Performance — James Nestor
Tim Ferriss
A legendary mixed martial artist who co-developed and constantly used an inspiratory muscle training device.