If my extra credit points are only having one treat a week, can I have as many treats as I want on my day off?

No, If you have chosen the challenge of only having one sugary treat a week than you are not able to eat more treats. You will have to deduct your extra credit points. However if you have chosen something else as your extra credit. You are allowed as many sweets as you would like. Remember!!! it still isn't free food!