I looked at my cc usage and I was at 90% of my weekly allowance after 3 days of use...BUT, if I looked at the usage stats with the chart, it showed, on a scale of 1-4 intensity of usage (4 being most intense), the three days as such:

Day 1: 2

Day 2: 3

Day 3: 1

Not sure how I can hit such limits so quickly with such low scores on its own chart.