Some people also use it to help them stay alert during work or school.

So he made a special effort to be alert during every moment of the routine.

She would have to be alert during their meeting to any confirming clues.

Contestants were required to stay alert during the game at all times.

A baby is typically very alert during the first couple of hours after birth.

After the periods with extra sleep, both groups were found to be more alert during the day.

Second, be alert to a low first-serve percentage during a match.

You may remain alert during the seizure or lose consciousness.

Being keen-sighted created, we are designed to be alert during the day and to sleep through the dark hours.

Patients are alert during the entire procedure, as it is a painless experience.