Burn the candle at both ends在蜡烛的两头烧，喻指过度劳累。

【例句】
If you keep burning the candle at both ends，you're going to burn out.
如果你继续蜡烛两头烧的话，你会油尽灯枯的。

They like to enjoy life and often burn the candle at both ends.
他们喜欢及时行乐，往往过度消耗精力。