Basically no. Your dreams really are about 5 minutes long. It's just that you have about 15 of them a night. Inception was totally full of soykaf as far as time goes (along with just about everything else).
>I remember one dream in which I thought years had passed, but sadly after waking up this feeling stopped.
It's entirely possible that the story of a dream spans multiple years but this is mostly achieved through time skips and false memories. Well noticed by the way, most people remain fooled by this even after they wake up.
>Is this only a matter of remembering and training (e.g. with a dream diary)? Or do I need to become lucid to prolong my dreams.
Though I've never heard of anyone attempting to prolong their dreams without lucidity I can see no strong reason it shouldn't work. At the same time, it seems a difficult task. There's just not an easy way to train yourself (that I can think of. If you think of something sensible, any sort of reinforcement, it will probably work). I'd go with the lucidity option, if only because lucidity is a nice thing to learn anyway.>>1080>I remember more of my dreams when I take a short nap
Very normal. You wake up faster and don't have as much time to forget them. Alarm clocks, or just training to wake up at the right time, can produce a similar effect. Also, the dreams we have napping are quite different, that we aren't sleeping as deeply goes a long way to making our dreams more "normal" (i.e. closer to reality or daydreams).
>I can't relax and do the lucid-dream induction at the same time.
Induction really isn't so great. It works and everything but I find reality checks to be much better. First induction is going to leave you napping and like I say that makes a difference. Also, there's a lesson in the first time you do a reality check when you're just 100% sure you're awake and find that you're not and then realise that you've been stood on top of a mountain of ice cream talking to a flying deck chair for the past 5 minutes and how the fuarrrk did you not notice before?
>I'm trying to archieve this >>955
Be careful. Sleep is a thing we don't entirely understand. It has many phases and while some don't seem to be that necessary (REM being the only one we cannot do without in the short term). It's hard to say what purpose they really have. Doing things like this is going to totally mess with the normal cycle. That guy probably does REM for almost all of the night but, as such, there's a number of other phases that are being missed and I imagine all of his dreams were like naps. Don't get me wrong that doesn't mean it's a bad idea to do it but, personally, I would definitely avoid doing it every night.>>1904>many of my dreams seem cutoff
This is selection bias. If we sleep and wake naturally we tend not to remember dreams at all. It's only the ones that get cut off that we're likely to remember, hence the appearance.