Achieve a naturally deeper voice in only 5 minutes and then done 5 more times in a day to make a significant change to the vocal tone in only one day! This worked super well for me, I hope it can help you!
[My Bodyweight Training Program] - https://onlykindsfitness.com
[Instagram] - https://instagram.com/focusedlucas
[One Week Deep Voice Experiment] - https://www.youtube.com/watch?v=r9XyUpRz5N0