bolt upright

Sitting bolt upright for a long flight can leave me near-crippled for days, as I once found out through an unwise seat selection.

And then write articles arguing that other people should sit bolt upright for hours on end in order to make this choice bearable.

Mrs. Ducksmith, who had sat with overwhelmed head in her hands, started bolt upright, and looked at him like one thunderstruck.

"Stop, my young friend," said Crafty, sitting bolt upright on his haunches.

After listening, for a time, without moving a muscle, he suddenly sat bolt upright and looked round at the player.

Thurstane, sitting bolt upright in his saddle, stared straight before him with a grim frown, meanwhile thinking of Clara.

There was, also, the creaking of a bed in another room, and a sound as of some one sitting bolt upright.