She says she thinks he was tired of being asked, or might have felt sorry for her.

VOA: special.2010.02.09

They say it can cause people to feel fatigued or extremely tired.

VOA: special.2011.01.18

He or she may begin to feel tired.

VOA: special.2010.02.02

Maybe it was becauseshe had no where else to go, or maybe it was becauseshe was so tired 'cause she went to bedand slept and slept like she hadn't slept in years.

VOA: standard.other