Originally Posted by
Clyde1820
Though, oxygen challenging the system (ie, via constrained air intake or training at elevation) can induce measurable change in healthy athletes, from a performance perspective. All for it. (Assuming one is otherwise healthy and fit.)
IMO, it's unnecessary. You'll be restricting your max power output as well if you restrict oxygen. That's not good for developing stronger muscles and bones to resist injury.
The apparent increase in perceived effort, pain, and struggle (also cardio stimulation) if you restrict oxygen can also be achieved without restriction by simply training at higher intensity and your bones will thank you for it.