She confirmed the routes slowly, frowning in unaccustomed mental effort.

His lips moved soundlessly with the unaccustomed effort of mental arithmetic.

This stopped him and his forehead lined with the unaccustomed effort of thought which finally produced speech.

The unaccustomed effort and fear pushed up Karatek's heart rate.

He had been climbing very slowly, but already his legs were beginning to ache with the wholly unaccustomed effort.

His muscles ached and shrieked at the unaccustomed effort, until now they were on the build.

Climbing had not been very difficult, but my limbs were stiff with the unaccustomed effort, and I was glad of the rest.

Garion's shoulders ached, and the unaccustomed effort of flying made the muscles in his chest burn.

He was tired, his feet were sore, and the muscles of his thighs were aching with the unaccustomed effort.

She was young, true, but the unnatural and unaccustomed effort of crawling rapidly through the ducts had drained her strength.