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

She kept jurors, lawyers and media on a strict schedule, with only two twenty-minute breaks per day and no lunch time to ensure maximum alertness.

From BBC • May 15, 2026

Each morning, participants completed cognitive tests and questionnaires designed to assess sleep quality, alertness, and other health-related effects.

From Science Daily • Feb. 4, 2026

They do so by irritating the linings of the nose and lungs, triggering a reflex that increases breathing rate and blood flow, fostering alertness.

From Los Angeles Times • Jan. 12, 2026

Energy and alertness may save the life of your son, your husband, or your brother.

From "Moon Over Manifest" by Clare Vanderpool