biological clock

It’s also not going to make it easier to go to sleep way before your natural biological clock, or circadian rhythm, says it’s time.

In the days after daylight saving time starts, our biological clocks are a little bit off.

The gradual shortening of days until the winter solstice messes up our circadian rhythm, the biological clock that takes note of daylight hours and regulates sleep, appetite, body temperature, heart rate and hormone production.

Bryn Woznicki, a 33-year-old filmmaker who lives in Los Angeles, has always known she wants to be a mother, “but every year,” she says, “it’s a ticking time bomb working against your biological clock.”

In shift workers, researchers want to test the impact of resetting their biological clocks to a standard day-night schedule.

I've never had any regrets and must have not come equipped with the mythical biological clock.

Before the fertility revolution, it was the alarm on the biological clock that rang at about age 35.

She now made plans to marry and have a child just as her biological clock was ticking toward never.

"Stress is basically a biological clock," Singer told The Daily Beast.