Introduction Patient exercises have been shown in two randomized controlled studies to be effective for reducing both the symptoms and severity in patients with moderate obstructive sleep apnea syndrome. A study by Puhan,1 et. al. involved lessons to practice and play the didgeridoo, a wind instrument that involves voice control as well as breath control. Regularly playing … [Read more...] about Evolution of Theory on Oral Appliances and Exercises for Sleep Apnea and Snoring