alertness

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

The research provides new insight into how sleep loss affects the brain and suggests that caffeine's benefits may extend beyond simply increasing alertness.

From Science Daily • May 30, 2026

Here, the very irregularity of the interior environment, including the concrete surfaces — richer and more textured than I expected — heightened my alertness.

From Los Angeles Times • Apr. 22, 2026

Some did their exercises at times to match their body clock chronotype - the natural predisposition to morning or evening alertness - while others did the opposite.

From BBC • Apr. 14, 2026

When this brain region becomes too active, it can actually trigger sleepiness instead, creating a delicate balance between sleep and alertness.

From Science Daily • Mar. 30, 2026

“Get dressed,” he ordered her, congratulating himself on his alertness.

From "Catch-22" by Joseph Heller