to exhaust one's thoughts and ingenuity to solve a problem or achieve a goal

to devote one's entire mind

to use up or consume entirely, especially in terms of resources, energy, or mental effort

to exert all of one's strength or effort; to do one's utmost

to destroy

to exhaust one's thoughts and ingenuity; to think something through thoroughly

to faint, swoon, or lose consciousness

tired and exhausted