to get little sleep or rest because you are busy until late every night and you get up early every morning.

She'd been burning the candle at both ends studying for her exams and made herself ill. (usually in continuous tenses)

• do the honours
• do the job
• do the rounds
• do the running
• do the trick
• do the unthinkable
• do the world of good
• do things by halves
• do time
• dot i's and cross the t's
• dot i's and cross t's
• dot i's and cross your t's
• dot the i's and cross the t's
• dot the i's and cross t's
• dot the i's and cross your t's
• dot your i's and cross the t's
• dot your i's and cross t's
• dot your i's and cross your t's
• double bind
• double-dip
• double-dipping
• double Dutch
• double entendre
• double over
• double-talk