Circadian Rythms

Finding sleep impossible even when you have the chance can be extremely frustrating, but this scenario is common among people who have jet lag or do shift work.

Under normal conditions, two systems inside the body interact to allow us to sleep and remain alert when we want to.

Understanding what happens when these two systems fall out of synch is an important step to achieving quality sleep even if you travel or work the night shift.

Click on the interactive activity below to learn how sleep and wakefulness are regulated throughout the day.