Towards the end of 2024 I read an article that Ken wrote. Something in me said pay attention so I ordered the R1. I started wearing it in January 2025. Getting use to it wasn't too bad though it did irritate my gums. I think a couple months went by and I looked in the mirror and noticed an improvement in my facial structure just like Ken writes about. When the R2 came out I ordered it. I have been wearing it every night since. The R2 is far more comfortable and easy to wear. I believe that I am still seeing improvement not going backwards at least.
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Reviv is a company that sells mouthguards that utilize 'dental biomechanics'.
Meaning that it naturally stretches the soft tissue of the mouth and skull and expands the arches and straightens teeth over time.
Also the body and many other health conditions can correct over time as part of the process.