But during the roughly 80 percent of the night that people are not in deep sleep, their snores can wake them up dozens of times; they just don't realize it. A big snort will typically wake a person for only a few seconds, not long enough to fully awaken or to remember it the next morning, says Clete Kushida, the president of the American Academy of Sleep Medicine. As a result, snorers remain oblivious of their interrupted sleep. And if the wife was lucky enough to doze off at the same time as the snorer did, she's probably oblivious to the interruptions as well. But ignorance isn't bliss: This type of fragmented sleep can significantly increase sleepiness during the day.