rise nbsp soft bone half onset shape walls night result common People Ageing throat alcohol muscles episode choking airways ability trigger seconds opening passage Smoking pathway windpipe diabetes imbalance cartilage formation tongue size fat tissues body weight major causes nasal cavity oxygen levels Sleep Apneais brain signals several forms causal factors sleep disorders several factors deviated septum significant drop many individuals normal breathing breathing issues severe conditions breathing patterns breathing problems high blood pressure Other medical conditions upper airway disturbances