Cut-off Retention
In this exercise, I combine breath-holds with narrowing my neck arteries. The exercise intensifies my regular breath-hold and improves my neck artery flexibility. If I keep my head tilted to the side at a particular angle for long enough, the narrowing of my neck arteries may cause insufficient Oxygen supply to my brain and result in dizziness.
Holding this twisted-neck posture for long enough may lead to losing consciousness. In the past, I have tried twisting my neck until I felt extreme dizziness, but I never got further into fainting.point of ‘air hunger start.’