I’ve heard of a technique called “chaining” before. I know it means purposefully waking yourself out of an LD and then immediately putting yourself back in one. The question I have is, why would you do that? Does it make the next LD more vivid or something?
I thought chaining was when you wake up from a LD you go back to sleep and get another one LD. 
It’s that too, I was asking why some people would purposefully wake themselves from an LD and chain.
They don’t wake themselfs on purpose. Only if they wake up without wanting to they do that, or if they can’t controll theyr LD properly, then they wake up and have another LD again, hoping that they’ll have more luck with that one 