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

Once growth hormone enters the system, it activates the locus coeruleus, a brainstem region that controls alertness, attention, and cognitive function.

From Science Daily • Mar. 30, 2026

These chemicals play key roles in motivation, attention, alertness, and stress regulation.

From Science Daily • Feb. 7, 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

“Crispin, there’s an old soldier’s saying: ‘If you have to choose between alertness and worry, being alert will bring you more days of life.’

From "Crispin: The Cross of Lead" by Avi