internal clock

In the morning hours, these lamps bring the sunlight that’s missing from the outside world indoors to let the body know it’s daytime and ensure its internal clock is set correctly.

I realize that this is very counterintuitive, but it’s a good way to reset your internal clock.

Now he stretches before participating in a virtual class while his internal clock ticks down — first to Wednesday, when hitting begins in practice, and then to game day.

If animals can marry their vision to an internal clock, then they can use the sun’s position as a compass, accounting for its movement across the sky throughout the day.

“We all have an internal clock in our brain that tells us what biological time of day it is,” says Ken Wright, a professor at the University of Colorado and director of a sleep lab.

Obama listened to his internal clock and told his nervous followers not to worry - I'm a strong closer.

No clocks in the infirmary, and no internal clock, and it may have been ten minutes or five hours.