(idiom) to go to bed very late and wake up very early to do a lot of work
Myriam always burns the candle at both ends because she doesn’t plan very well, and has to do all of her work at the last minute.
Rachel burned the candle at both ends because she had a presentation to give to her boss.
A: You look terrible, what happened?
B: I’m burning the candle at both ends to try and finish my assignment for tomorrow.
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