1
general::
Phrase(s): burn the candle at both ends
Fig. to work very hard and stay up very late at night. (One end of the candle is work done in the daylight, and the other end is work done at night.) • No wonder Mary is ill. She has been burning the candle at both ends for a long time. • You’ll wear out if you keep burning the candle at both ends.
McGrawhill's American Idioms And Phrasal Verbs
2
general::
Exhaust one's energies or resources by leading a hectic life. For example, Joseph's been burning the candle at both ends for weeks, working two jobs during the week and a third on weekends. This metaphor originated in France and was translated into English in Randle Cotgrave's Dictionary (1611), where it referred to dissipating one's wealth. It soon acquired its present broader meaning.
American Heritage Idioms