This book can be found at retailers like Amazon and Better World Books .
Dr. Felix Liao’s Six-Foot Tiger, Three-Foot Cage explains how a mouth that is too small for the tongue, which he calls "Impaired Mouth Syndrome," can cause chronic health issues like snoring and sleep apnea. The 2017 book offers a 10-step plan for "Holistic Mouth Solutions," utilizing non-surgical,, epigenetic oral appliances to expand the mouth.