Darkside, Redline Ep2, Suffocation Drill ( INSANE )

In this insane suffocation drill, Instructor Zero tests his personal performance limitation under reduced oxygen intake conditions. This drill is extremely dangerous and should not be attempted at home. This drill was conducted under medical supervision and with a support staff. Again, please do not try this at home. Please be sure to click the subscribe button to be notified of new training videos: Click here to join our community on Facebook: ht