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.

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

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

Research suggests certain colors can enhance a sense of well-being or even increase alertness.

From The Wall Street Journal • Dec. 26, 2025

He had the same wavy, brown hair and blue eyes, the same physical alertness, but none of the good humor Matt was used to seeing in the bodyguards face.

From "The House of the Scorpion" by Nancy Farmer