I wake up briefly, often, throughout the last 3 or 4 hours of sleep. When I wake up in the earlier hours of sleep it is usually to go to the bathroom quickly.
The brief awakenings seem like breaks within dreams, or within one dream, and whatever awakenings seem to often influence the dreams direction.
The dreams can be very exhausting, as they can seem so ongoing, long and near completely real (at times it is awesome); sometimes I'll wake up briefly, slightly confused, thankfully though within moments of actually opening my eyes, I know exactly what the deal is and my actual place...
I roll back and forth quite a bit through out each night, and think that I tend to be semi-aware of doing such; no idea how many times that is each night, but sometimes or maybe often it is likely a few turn overs an hour.
If I have any stresses, anxieties about something upcoming, or pressures upon me, I can hardly stay asleep upon the common awakenings, or in combination I'll have bad insomnia getting to sleep and staying asleep.