The wearing of ear plugs at night.
D000328:Adult; D000368:Aged; D004430:Ear Protective Devices; D006801:Humans; D008875:Middle Aged; D011482:Protective Devices; D012216:Rheumatic Diseases / Q000503:physiopathology; D007319:Sleep Initiation and Maintenance Disorders / Q000503:physiopathology*