Sit down to read and the flywheel of work-related thoughts keeps spinning—or else you're so exhausted that a challenging book's the last thing you need.

坐下来阅读时，与工作相关的思绪像飞轮一样不停地旋转——也许你实在是筋疲力尽，最不需要的就是一本有挑战性的书。