Watch this video and practice this, if you are trying this for the very first time I suggest you do it laying down, for you may pass out during the practice and hurt yourself.
Guided Wim Hof Method Breathing
Don't do the breathing exercises in a swimming pool, before going underwater, beneath the shower, or piloting any vehicle. Always practice sitting or lying down in a safe environment. Tinnitus symptoms may appear as a result of pushing too forcefully during the breathing exercise.
