insomnia.
10) to get up / wake up at the crack of dawn – to wake up very early in the morning.
example - we had a morning flight to catch so we woke up at the crack of dawn.
11) sleep in – to remain asleep in bed till late than usual.
example – on weekends i usually sleep in till late afternoon.
12) to crawl back in bed – to go to bed again after waking up.
example – this morning i skipped work and crawled back in bed. 