One advantage of not sleeping well - actually some may say the only advantage - is that getting up in the middle of the night enables you to hear the nightingales singing.
They don't only sing at night, but it's easier to hear them in the quiet of the olive grove at 3am. It's a beautiful song. According to the RSPB the "high quality song is a fast succession of high, low and rich notes that few other species can match". I think that about sums it up.
Although the famous song suggests that A Nightingale Sang in Berkeley Square, you'd have to doubt that anyone would have heard it above the roar of traffic in the West End of London, even 50 or 60 years ago.
Be that as it may, it's a good song and a fitting one to end this post.
- Picture by Nachtigall_(Luscinia_megarhynchos).jpg: J. Dietrich derivative work: Bogbumper (Nachtigall_(Luscinia_megarhynchos).jpg) [CC BY-SA 3.0 (http://creativecommons.org/licenses/by-sa/3.0)], via Wikimedia Commons