People will say it's fake, some said it could be dangerous however I still did it and it changed my voice.

Age:17 Sex: Male Height: 5'10

Here was the plan I would yelling as loud as I can twice a week for as long as I need to get my voice deeper and see if yelling truly gives you a permanent deep voice.

Week 1: My voice sounds like that annoying kid that's 17 however after doing the yelling I sound more like a normal 19 year old.

Week 2: My voice sounds deeper and my friends say that my voice got deeper too.

Week 3: My voice is slowly becoming what I wanted it to be more manly and deep so far it's working I will update each week.