I have had this for years, and wish I didn't. Sleep 3-4 hours, awake for around 2-3, then want to sleep again for another hour or two. Rarely get the second round, which often leaves me dragging. This was a huge problem before I retired last summer, but even now I feel better if I can get six hours uninterrupted rather than the two phases.
This time, like all times, is a very good one, if we but know what to do with it. Ralph Waldo Emerson
Any given day you are surrounded by 10,000 idiots. Lao Tsu, founder of Taoism