The SI derived unit for volume is the cubic meter. 1 cubic meter is equal to 264.172051242 gallon, or 1000 litre. Note that rounding errors may occur, so always check the results.
Snoring is a common problem, caused by a blockage of the nasal passages during sleep. Snoring can be a sign of a serious problem called sleep apnea, where you stop breathing for 10 seconds or more during sleep. There are two types of doctors who treat snoring problems: sleep medicine doctors and otolaryngologists (ear, nose and throat doctors). (AndreyPopov/iStock/Getty Images)
Craniofacial anatomy could be an important factor in the prevalence of snoring and sleep apnoea. Both men and women who snore or have sleep apnoea have differences in craniofacial anatomy compared to the normal population. It is known that men have significantly larger airways and pharynx than women.