Chapter 5 psychology

So i just got done with chapter 5 in psychology and for once I can say i got into the chapter and even the discussion board which so far I've had a hard time getting into. this chapter was great and i learned a lot of things from sleep disorders to even psychology drugs. Our discussion board had a really good topic about dreams and cannabis being used to medical use or not. Im a big believer in the use of medical cannabis because of the benefits it has showed that are good for people and even children.  A couple of people in our class seem to disagree with me on this subject which I can totally understand and everyone has the right to agree or not but it seemed like some people were getting a little to personally on the whole topic laugh out loud, but it was cool to see what people write about from there dreams to their feeling on the cannabis topic.  One thing I still don't understand about dreams is that when you wake up from having one for what ever reason and then after say like 5 to 10 mins later you fall asleep again how do some people pick right back up in the same dream theywere having   and in the same place? To me this is totally crazy. After reading some of the post on the board I saw I wasn't the only person who this has happened to . Which I found was cool and so the person and myself got into a chat about this and why we though this was happening were we would get up and then after some period of time go back to bed and pick up with the same dream and neither one of us really has a explain on why or even how. The guy did bring up a good point though which I never though about and he said maybe its because it was the last thing we were thinking about so thats why we picked back up with the same dream. May he is right but then again maybe there is a even better reason for this which is still not answered at this point in time. Other then that psychology is different then I though it was going to be and even kinda weird or hard at times. Like for whatever reason i just cant pick up the reason behind why psychology is the way it is. I guess this wont be one of my stronger subjects in school. Which sucks because i want to learn as much as  I can from this class but i just cant relate to it at all :/