Periods of fasting, times when we forgo sleep as long as possible.

I spend my nights now at the building's lobby, and forgo sleep.

She pushed down her hunger with the same ruthlessness she'd used to forgo sleep.

We caught up with dedicated fans who forgo sleep to watch the epic game.

But she had not complained once, not even when he had insisted they must forgo sleep until they reached Storlock.

His training might allow him to forgo sleep for some time, but there was no dire need to delve into that yet.