Growl vocals

Just try tightening your abs like someone is about to punch u in the gut. Then all you have to do is use the air thats coming out and control the growl with the type of vibrations you are making with your throat.

Don't overdo it though, cos like all muscles ur diaphragm gets tired. This is more important in clean singing......like russell allen style. For his type of singing I have to REALLY use my gut, and even then I can't get enough power so I guess it's gunna take a while to strengthen everything up.