i just had a WILD or a WBTB not quite sure think it was a bit of both, i found that if you are going to wake up then get up for like 20 mins. enough to make your mind active but keep your body tired, trying too soon would mean you are still too tired and will fall back asleep but staying up to long will stop you from gettin back to sleep its my second day trining and my first WILD/WBTB. awareness is the key!