I take a long time to get to sleep, unless I wait until I'm really, really tired before I go to bed; it's not unusual for me to lie in bed in the dark for several hours before finally drifting off. Once I'm asleep, I find it very difficult to wake up, and can get back to sleep in seconds if I'm disturbed. If I'm forced to get up too early, I can have a lingering feeling of disorientation and confusion for several hours, and can get straight back to sleep even after I've had a shower and gotten dressed.