@brandonmanger_nurse: Comment “INTAKE” below and I’ll send you the link. Level 1 to Level 4 — I tested the airflow shift at every level and picked the one I’d actually wear. Level 1 was a clean start, Level 2 opened up more, Level 3 felt strong… but Level 4 was my level. If you’re trying to breathe through your nose more easily, Intake is worth trying. @Intake Breathing https://www.intakebreathing.com/MANGER #IntakeBreathing #Level4 #NasalBreathing #BreathBetter #AirMaxxing