circadian rhythm

The period of their circadian rhythm has grown to 47 hours.

They know the time because of circadian rhythms the field produces.

Health problems can result from a disturbance to the circadian rhythm.

Changes in sleep and circadian rhythm occur as you age.

In addition, it can be difficult to find a doctor who knows much about circadian rhythms, as the field of study is quite new.

Exercise may also play a role in determining circadian rhythm.

Prolonged administration can have an impact upon the circadian rhythm.

"Your normal circadian rhythm is longer than 24 hours in 99 percent of people," he explained.

It, too, is being generated by the body's circadian rhythms.

Light pollution has also been found to affect human circadian rhythms.

Light's effect on the circadian rhythms of all or most animals has been well documented.

The cycles of day-to-day changes are known as circadian rhythms.

Circadian rhythms are not the only factors that influence whether you get a good night's sleep.

That's because your circadian rhythm affects you head to toe.

But back in the sunlight, all quickly resume their 24-hour circadian rhythm.

An hour here or there may not seem like much, but we're fooling around with circadian rhythms.

There's just much less reliance on your natural circadian rhythms."

It is classified as one of the circadian rhythm sleep disorders.

It is also the primary treatment for circadian rhythm sleep disorders.

There may also be some changes in circadian rhythms.

For people desperate to change their circadian rhythms, doctors say, there are some options.

Doing so can throw off the circadian rhythm - the body's internal clock.

The party invitations arrive in the mail with a circadian rhythm.

Every cell in each animal and plant beats to the circadian rhythm.

Although we often try to ignore it, our bodies are also controlled by a circadian rhythm.