Why do daily 'nutrient goals' change?

magicalpony

Hi. This is probably a silly question, but I'm wondering why the daily goals for nutrients seem to change every day. For example, my 'sugar goal' varies from 38 to 40 different days, and other nutrients vary almost 5 units. Why would this occur? I'm not changing any settings or anything to cause this.
Thanks!

codycsweet

I am still fairly new at this, but I think when you exercise and you have more calories added your goals and this changes your goals

TrekkerCynthia

You probably have them set as a percentage of calories eaten.