She counted the seconds in her head, waiting for the crash from below.

He looked at the table and began rapidly counting in his head.

As the flash lit up, he slowly counted to ten in his head.

Helen looked around and seemed to count in her head.

She continued to count the chest pumps in her head.

Kirk counted seconds in his head, and then, right on schedule, came the moment he'd been waiting for.

I'm going to count backward from four in my head.

Jim sat there watching it happen, counting ships in his head.

We've taught the kids to count the seconds in their head.

She counted to a hundred, in her head, twice, and tried to think about something wonderfully different.