I think sleep deprivation, sleep fragmentation, certainly causes attention deficit issues.

We're very highly motivated to get back up and running ASAP, ... The Army needs these vehicles.

The amateurs love to watch the pros.

The transition to go to school is easier for younger children, ... Once you start puberty, the transition gets tough, since now the brain tells you to stay up later, but parents and school tell you to get up earlier.

If they're taking naps they aren't lazy, ... They need to make up this sleep debt.