insomnia

Creeps up unawares. God bless insomnia, it's as regular as the seasons. And unpredictable as Mad March weather. At 1am, it's just a niggle. At 2 it's no more than a late night. At 3 it's starting to bug you. By 4 you've quit caring, and wouldn't mind spying the dawn break through the trees. At 5 you're asleep. Sometime after 6, the dawn breaks through the trees.

Your friend is back.