If your mental health has been declining, your sleep-wake cycle may be to blame, according to a new review of literature. Taylor Leamey wrote about all things wellness for CNET, specializing in mental ...

A hidden change in Arctic geography may have disrupted the ice age rhythm and transformed the global climate over thousands ...

The human body is packed with natural rhythms, from your sleep-wake cycle to the steady pulsing of blood through the brain to heart rate and pulse. Now, scientists say the gut may hold the key to ...

In the basement studio of the New Ballet in San Jose, a single figure crouched in a low lunge lifts his head, unfolding upwards like a flower turning toward a rising sun. He traverses the space in a ...

(AP) A growing number of teen girls say they use the rhythm method for birth control, and more teens also think it's OK for an unmarried female to have a baby, according to a government survey ...

Circadian rhythms are cycles in your body, 24-hour patterns that your brain and body goes through. Circadian rhythms cause physical and mental changes in the body, including feelings of wakefulness ...