To burn the candle at both ends is to get very little sleep or rest because you are working or studying (or celebrating) late into the night, and then starting again very early in the morning. Your night is shortened like a candle burned at both ends.
Examples of use:
1. I’m so tired. I’ve been burning the candle at both ends trying to finish my thesis.
2. We used to burn the candle at both ends when we were young. Now we go to bed at 9 p.m. every night!
3. If you want to be a successful athlete you can’t burn the candle at both ends.
Do you sometimes burn the candle at both ends?
Image by ecram1