I can’t have have dreams unless I get eight or more hours of sleep but I can dream in naps it’s weird
I don't usually dream much, but I usually have to have a clear mind, a cold room and i only require like 5 hours of sleep to dream
I sleep best in my bed.
Not in a concrete parking garage…
If I'm camping in a tent, I hardly ever have dreams
my dreams depend on time- if i fall asleep at a reasonable hour, i usually never have any dreams, and if i do, they're always very hazy. if i fall asleep at, like, 3:00 AM, i'm guaranteed to dream about something strange, and it always immediately leaves my head as soon as i wake up. there's a sweet spot where, at a certain hour, the locations of my dreams begin to recur, forming a sort of dream-world. these dreams are usually incredibly vivid. the human mind is fascinating!
I have noticed that the best way to have a dream (or even lucid dreams or OBEs) is to go to sleep and set an alarm after about ~3-4 hours. I think the reason why this works is that it's harder to remember your dreams if you are too tired but you still need to be somewhat tired. I have also heard that meditating regularly can increase the amount of dreams you remember.
I onetime spent like 4-5 hours in VR just exploring different worlds with my friend, and ended up going to sleep right after. My dream ended being the same thing but like x10. Everywhere felt like an environment in Yume Nikki. Only problem was I wasn't lucid dreaming so I didn't realize how cool it was.
Staying up 24+ hours used to give me long feeling or multiple dreams, but I noticed short naps give vivid ones too.
They both put you into REM mode apparently, so that makes sense.