How much of a health impact does frequently staying up late have?
Staying up late is defined as insufficient sleep or irregular sleep patterns. Many people who stay up late aren't unable to go to bed early; rather, they feel it's a waste to end the day just because it's already bedtime, so they stay online or on their phones. Why can't they break free from this "revenge sleep deprivation"? Are you one of these night owls?
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