Let me then be the first in your contradictory sample. I drink caffeine more than ever and have consistently been experiencing a higher number of vivid dreams in the past year or so.
Same here. I also find I have more vivid dreams if I'm dehydrated or hungover, do you find the same? (And to add another factor, do you drink alcohol?)
Alcohol suppreses REM sleep, resulting in a rebound effect. This can happen in the same night, resulting in more vivid and memorable dreams closer to morning when, for a number of reasons, we are more likely to remember them.
