Why are my dreams so vivid lately?

Dreams happen all night, but the vivid, story-like ones concentrate in REM sleep — and you only remember a dream if you surface during or just after it. So “my dreams got vivid” almost always decodes to one of two mechanical facts: you are getting more REM, or you are waking more often out of it. Everything on the usual-suspects list works through one of those doors.

Stress and upheaval lead the list — emotional load increases dream intensity and recall, which is why hard seasons produce cinematic nights (and why chase dreams lead our dream weather most weeks). Fragmented sleep — new baby, worry, noise, late caffeine — multiplies awakenings, each one a chance to catch a dream mid-reel. Sleeping in extends the morning REM periods, the longest and strangest of the night. REM rebound is the sharpest effect: alcohol and cannabis suppress REM, and when they wear off — or when you cut back — the brain reclaims the missing REM with interest, producing days of unusually intense dreams. Some medications (certain antidepressants, melatonin, some blood-pressure drugs) are associated with vivid dreaming; pregnancy reliably turns dreams up, through hormones and through lighter, interrupted sleep.

None of this makes the vivid dream meaningless — intensity is salience, the night underlining what it's processing. The traditions would simply add: now that the volume is up, it's worth listening to the content. If your vivid stretch comes with real distress — nightmares most nights, dread of sleep — that pattern deserves a clinician; recurring nightmares respond well to treatment. Otherwise, enjoy the season of loud nights, and tell one while it's warm.