Fact
Your dreams run late
Events often show up in dreams about a week later: the dream-lag effect.
Good evidence1 min readReviewed
Something that happens today may appear in tonight's dream, then fade, and come back about five to seven days later. Researchers call this the dream-lag effect. It means today's stress may surface next weekend, and it is one reason a calm evening routine pays off over a week, not just a night.
Sources
- Nielsen TA, et al. Immediate and delayed incorporations of events into dreams: further replication and implications for dream function, Journal of Sleep Research, 2004
- van Rijn E, et al. The dream-lag effect: selective processing of personally significant events during rapid eye movement sleep, but not during slow wave sleep, Neurobiology of Learning and Memory, 2015
Evidence label: Good evidence. What the labels mean.
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