my 2 cents....(wink) (sorry it's a little long)
i'm not on Atkins, i'm on a CKD plan but i think it's appropriate to your situation...i'm supposed to carb up every Friday night after my last workout, but sometimes I get a little gungho and have gone 2 weeks (10-11 days in ketosis) before carbing up....one thing i've notice (for myself) is that when I'm on the longer stretches of LCing, the more days I go, the slower the weight loss is. After carbing up for the weekend , I start LCing again and the weight comes off like it did before. I think if I were to continue LCing over 3 or 4 weeks I'd probably stall-out. So this is the reason I'm on a CKD plan....but as it goes, what works for me, doesn't necessarily work for anyone else.
but if you do plan to carbup (re-feed) your system, a few things to remember:
1. regardless of carb type, there is a maximum amt of glycogen that can be absorbed in a given amt of time, and depending on the type of exercise done before carbing up, the rate of glycoden resynthesis can vary.
2. you want to fully replenish your glycogen levels in the least amt of time so you don't spill over of carbs to fat storage
3. (from BO) if your glycogen levels are zero (following a depletion workout), within a 24 hr period,it's recommended that the amt of carbs is 8-10 gm of carbs per kgm of lean body mass(LBM) (8-10 g/kg). (i.e. if LBM = 150 lbs ~ 68.04 kg, than 10 gm of carbs X 68.04 kg LBM = 680.4 gm of carbs in 24 hours)
4. i usually eat small meals every 2 to 3 hrs all day on my carbups for 24 to 36 hrs (i can definitely feel/notice when the glycogen resynthesis begins, a little nausea
but not enough to make me dizzy or vomit, just a little weird feeling)
5. my first carbs ingested after my Fri workout is always in liquid form, quicker absorption.
6. it's recommended to eat simple sugars or high glycemic index (GI) foods during the 1st 24 hours.
7. if there was a particular carb treat that you kept thinking about while LCing than eat it now and see how quick you get sick of it, your mind likes to play with you....damn brain...
i'm not saying that everyone should do this, i just wanted to let you know how it works for me....
i hope this helps you in making an informed decision......