Sedentary:
Little or no excercise, desk job.

Light Active:
Light excercise / sports 1-3 days/week or job on the feet/walking most of the day.

Moderately Active:
Moderate excercise/sports 3-5 days/ week or heavy physical job.

Very Active:
Intense excercise/sports 6 -7 days/week.

Extra Active:
Intense excercise/sports 6-7 days/week and heavy physical job.