Hissing with the tongue between the teeth while contracting the pelvic diaphragm and holding pressure below the head and neck can teach proper abdominal pressurization for lifting and stabilize the core.

“then you put your tongue between your teeth and you start and you start hissing and you do this in this ratcheting kind of manner so try to keep old the pressure out of your head out of your neck direct old the pressure it all this pressure is just you're really staying below and so this type of hissing you will notice that very rapidly you're going to contract everything around your waist so everything around your waist is is going to contract and you're going to stain your abdomen you're also going to start learn how to properly how to properly stabilize yourself under under heavy weights”