By Katie Gilbert, published on July 1, 2006 - last reviewed on November 20, 2015
Modern life doesn't allow most of us to be our true selves.
What's your body clock? Print out a copy of PT's quiz and find out how you measure up.
Answer each question and tally up your score.
Always = 5 Sometimes = 3 Never = 1
_____ I have a good appetite 20 minutes after waking in the morning.
_____ I would have a great workout from 7 to 8 A.M.
_____ I find it easy to get out of bed in the mornings.
_____ I wake up without an alarm clock on workdays.
_____ If I worked between 4 A.M. and 6 A.M., I would choose to sleep beforehand rather than afterward.
_____ I am at my very best when I start my day.
_____ If I had to take an important test, I would prefer to take it at: 8-10 A.M. (5), 3-5 P.M. (3), 7-9 P.M. (1)
_____ If I could choose my schedule, my core working hours would be: 5-10 A.M. (5), 10 A.M.-5 P.M. (3), 5-10 P.M. (1)
_____ TOTAL (compare to the scale below)
35-40 Extreme Early Bird
You are among the 10 percent of people who naturally rise by 5 to 6:30 in the morning, feeling fresh. You are most productive during the first half of your day, but in the afternoon your mental sharpness steadily declines.
27-34 Moderate Early Bird
You have many early bird traits, but perhaps you set your alarm clock "just in case," or sleep in on your days off. Nights are not off limits for you, but you don't often stay out late.
22-26 You Are Neither
Chronobiologist Michael Smolensky refers to your more flexible type as a "hummingbird." You tend to be ready for action both morning and night, in sync with our culture's demands.
14-21 Moderate Owl
While you don't consider yourself nearly nocturnal, you do prefer evenings to mornings. Your mood increases steadily throughout the day. A job that starts at 7 A.M. is not appealing, but a fishing trip at dawn isn't out of the question.
8-13 Definite Owl
If you had it your way, you'd sleep till noon. If you hold a 9- to -5 job, you rise as late as possible and usually skip breakfast. At night you find yourself busy, perhaps surfing the Internet, doing the laundry or socializing.