There is an ebb and flow to each and every work day. Sometimes the work day goes by swiftly. There are other times when the clock moves slower than a teenager who has been asked to wash the dishes.

Is there a science to how our work day unfolds? Believe it or not there is. Part of the science involves our internal body clock. That's the biological time piece that's hard wired into our DNA or mindset. It's usually controlled by chemicals in the brain and sunlight.

The other part of the equation are external factors. How much rest did you get the night before, how much work is piled up in front of you, do you have meetings or appointments, and how much do you like your job. These are all factors in how productive your day will be how attentive you will be to the tasks at hand.

A recent survey showed that our most productive time of the day is 10:26 AM. Assuming you work a 9-5 job that means you've been at work for about 90 minutes. You have planned your day and you are ready to dive in head first.

Your least productive time of the day is 2:55 PM. That's about halfway between lunch and quitting time. Your midday meal has slowed your metabolism and 5:00 pm seems too far away. That's probably the perfect time for you to take a short break. If you drink coffee in the afternoon maybe a cup of Joe would help, maybe a soda, or a glass of water and a good stretch would help too.

You do have one more productive time of your day before you climb in the car and crank up the radio station for the ride home. That time is 4:26 PM. That's the "gosh darn it" time of the day. That's when you realize all the stuff you were supposed to have finished but haven't. That's when you get in a mad panic to empty the inbox and fill up the outbox.

There is a method to help your figure out when you're at your best during the day. It might be a good idea to know that so you can plan your most difficult tasks around that particular time.