When working an occasional night shift, people often feel groggiest in the middle of the night but experience new energy around the time they normally would wake up. This best illustrates the impact of

Question

Quizplus · Accepted Answer

The described pattern of feeling groggy during the middle of the night and experiencing new energy around the time one would normally wake up is indicative of the impact of the circadian rhythm, which regulates our sleep-wake cycle and causes us to feel more alert during the daytime hours. This pattern is also commonly seen in individuals who work night shifts and try to adjust their sleep schedule to accommodate their work. Neuroadaptation, selective attention, and REM rebound are not related to this phenomenon.

When Working an Occasional Night Shift, People Often Feel Groggiest