Home Forums Hunting & Shooting Hunting Rifles What does 223AI mean?

At the link it provides the following advice:

"Just three minutes per day is all you need; pop in the mold and then make mouth movements. The makers recommend you say vowel sounds out loud over and over again, producing regular and methodical exercises that will strength the twelve facial expression muscles in a comprehensive way."

Will your whacker be able to tell the difference between hummed vowels and consonants? I've never really thought about it before.