Most people will roll over and go back to sleep, but those with insomnia become conditioned to feel anxious when they awake during the night.

CNN: How to solve 9 sleep problems

When they awake, they are dangerous.

FORBES: Magazine Article

He encouraged workers to nap during their shifts, reasoning that a short rest would stimulate more creativity when they were awake.

NPR: New Book Shares Insights From Steve Jobs' 1st Boss

But I feel I'm sort of lucky because it happens when I'm asleep... whereas for some of the lads I know they get it when they're awake.

BBC: What is life like for Helmand blast survivors?

But it may be that when people are awake they are sitting quietly watching TV.

NPR: Study Offers New Insights into Obesity

In previous work, they demonstrated that phones in idle listening mode expend roughly the same amount of power as they do when they're fully awake.

ENGADGET: New 'subconscious mode' could improve smartphone battery life, supress your WiFi id

It forestalls impatient souls, upset at the prospect of missed connections and lost hotel bookings, being kept fretfully awake when they would be far better off dozing away such temporal qualms.

CNN: From Our Correspondent: On a Magical Hill

Some were even living on Mars time, adding forty minutes to every day, till they were awake at night and asleep when the sun was out.

NEWYORKER: The Martian Chroniclers

Where we do understand we are all in this together, that when a child is sick and can't see a doctor, the family loses everything because someone had an accident, when a mother or a father lies awake at night worrying about how they possibly care for the people they love.

CNN: Clinton's September 17, 2007, speech on health care