Sugar on a Refeed day?

[ADT]

Here are the stats:

Height: 6'2"
Weight: 191
Age: 30
BF%: No clue. (Starting to see my abs...)
Current cycle: Cutting

Calories per day: 1700 - 2100 (Currently averaging around 1850)
Fat per day: 90g - 110g
Protein per day: 190g - 210g
Carbs per day: 35g - 100g (Currently averaging 86 - I eat "clean")
Sugar per day: Under 25g

1) I have done low carb weeks with a refeed on one of the seven days. I have done refeeds with lots of oatmeal, Fiber One, bagels, tons of vegetables, etc.

2) I have done other refeeds where I have eaten Cinnamon Toast Crunch cereal, organic sugary treats such as organic pop tarts, organic cookies, organic snack bars, etc.

My question is, Do I need the sugar to kick start my metabloism every week? I am really not sure at this point. During both types of refeeds, my results have not been completely clear. I have done searches and read other articles on refeeds and I cannot come to the conclusion of whether or not sugar is needed for a "proper" refeed. The reason I ask specifically about sugar is because my daily intake of carb grams and sugar grams are amazingly low.

Anyone care to comment or have suggestions?

Best,
Andrew