This study sought to assess whether taping the mouth at night has a positive impact on asthma control since it would be a simple method to implement. It was a randomised, single-blind, crossover study of individuals with symptomatic asthma. The study concluded that taping the mouth at night did not have an effect on asthma control in the individuals who had symptomatic asthma. Cooper, S, Oborne, J, Harrison, T, Tattersfield, A. (2009) Respir Med. Volume 103, Issue 6, pp. 813-819. Read the Study