It says in every guide that you need to wake up for about 20-60 minutes in a WBTB.
I usually use WBTB and then try to WILD to sleep but never make it. I end up lieing there for 4 hours. (Horrible -.-).

So, how does it help to be awake for so long? Would 30-60 seconds work just as well? Why or why not? D: