Burn the candle at both ends

Pro Tip 1/3

Metaphoric Imagery

Picture a candle with two flames. It's a metaphor for using energy excessively.

He's surely burning the candle at both ends, studying till dawn and working right after.

Pro Tip 2/3

Unsustainable Effort

It implies an effort that cannot be kept up for long without rest.

She cannot keep burning the candle at both ends; she'll wear herself out.

Pro Tip 3/3

Health Implications

It hints at potential negative effects on health from overwork.

I worry about him burning the candle at both ends; it's not healthy.