I had some trouble waking up today. Specifically, it took 3 or 4 tries to manage it. Each time I tried, I thought I had woken up. I woke up into one of those hyper-realistic dreams. Each time, I was up and walking about for several minutes before realizing that I was still asleep. It was seriously frustrating. I was very relieved to wake up and find I was actually awake that time.