Hi there, I suffered from bad insomnia for years. It improved a little bit. But what now happens: when I get 7-9 h of sleep I dont feel refreshed, its like my whole system goes into hibernation, I can barely keep my eyes open! That does not happen when I sleep very bad (3-5 or 6 hours). This too leaves me exhausted , but more the wired-adrenaline type feeling. This started only recently. One year ago when I managed to get my 8 hours of sleep I felt so much better. Anyone elase? Scientific explanations for this? Thank you!