Monthly Archives: January 2014

The O2 Trainer Makes Sense for Amateurs and Weekend Warriors Alike

  Whenever I talk to people about the O2 trainer, one of the first questions that people ask me is whether or not this is safe for amateur athletes to use? I get it. I mean, it’s one thing for a former mixed martial arts (MMA) guy to say that it’ll give you super-efficient workouts,

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