No matter how much or little sleep I get I always wake feeling groggy and dont really function well for at least 30mins. My little sister is the same way. I thought I had sleep drunkeness syndrome but that seems perhaps a bit more extreme than what I have. So far as I can tell the way I feel is the way a person feels when they are woken during Stages 3/4 (delta sleep). These are the deep sleep stages, and this is when body restoration and repair occurs. Temperature drops even further during this phase, brain waves are slow and there is decreased muscle tone. People woken during delta sleep are often groggy and disoriented. Night terrors occur during this sleep stage. I feel like I have tried everything. I preety much never wake up feeling good. Please advise.