[idiopathic]

When I was at college I read that Margaret Thatcher slept just 4 hours per night, and I was so envious, wishing I had that extra time every day. Three years ago my wife and I had twin girls and that meant very little sleep at night for me (night shifts were my responsibility as my wife still kept her paid job). In the last year the kids sleep fine, which means I get to sleep better, but strangely I still wake up after four hours without any need to. A few months ago I learned that Thatcher had twins as well :-)

[ses]

The cynic might say having only four hours of sleep didn't do her any favors, based on some the decisions she made in her time as PM.