The Cruise Phase of the Dukan Diet Explained

The Cruise Phase is the second of the four stages of the Dukan Diet. It is also the second of the two weight loss stages. The Cruise Phase is the part of the Dukan diet where followers lose the remaining pounds needed to bring them to their target weight.

How long you will need to stay on this phase of the diet does of course depend upon just how much weight you have to lose. As a rough gauge you will lose about a pound for every three days spent cruising.

In this part of the diet you alternate a pure protein (PP) day as in the Attack phase with a protein and vegetable (PV) day. The high protein foods which can be eaten on PP days remain as in the Attack Phase and there are 28 permitted vegetables that can be added on PV days.

Whilst cruising you should usually follow a rhythm or pattern, this is the way in which you alternate the PP and PV days. When the diet was first published the recommended rhythm was 5 PV days followed by 5 PP days however many found this regime difficult to fit into their routines. The current recommended rhythm is 1 day PV followed by 1 day PP.

The 1 day PV/ 1 day PP rhythm does have some definite advantages. It allows you more variety and needs less willpower. 5 days of PP in one stretch is not an easy feat to repeat time and again. It also adds the additional fiber from the vegetables in a more evenly distributed way.

You could of course devise your own rhythm and say have PP only days on Mondays, Wednesdays and Fridays with PV days for the rest of the week. The PP days can equal but should never exceed the PV days and there should not be more than 5 consecutive PP days. If you adopt a personalised rhythm you may not lose weight so quickly but you may find it easier to maintain.

In this phase of the Diet you increase the daily amount of oat bran consumed to 2 tablespoons a day and up the amount of daily exercise to 30 minutes.

376 Responses to “The Cruise Phase of the Dukan Diet Explained”

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  • Nana on August 13, 2017

    Hi Amber,

    First off, thank you so much for this website, it’s full of great info and I can honestly say that eating healthy has never been that exciting and yummy!

    My BMI is 24.5, I do not have much weight to loose and mainly started the diet to improve my eating habits and if possible loose a few kg and to back to my original ideal weight of 65kg. I never used to eat breakfast, I would sometimes eat a butter croissant around 11am, then eat juk food for lunch around 15:00 and have takeout at about 9 or 10pm, I wouldn’t usually snack but if I did, I would have a cheese plateau and wine (yes, I’m French, but based in the UK 🙂 ). I’m on my 7th day of Cruise and I still don’t have much appetite at breakfast so I just tend to have a coffee with a 100g yogurt + oat bran. I’ve been trying to eat both a morning and afternoon snack on top of my lunches and dinner. I do not feel hungry between meals and when I eat my meals the portions are a little smaller than before the diet. I only feel peckish after walking home from work for about 1h (only activity during the week).

    1. Because my body is not actually used to eating that frequently, could this slow down my rate? Could I even put on weight due to eating more food overall per day? I feel like my eating habits have improved tremendously anyway (no junk food anymore) but want to make sure I’m not going to gain weight.
    2. Also, I normally walk home for that long so do I need to add an additional physical activity on top or can I just continue to do that?

    Thank you so much for your help!

    • Amber on August 13, 2017

      Hi Nana

      Eating doesn’t slow down your metabolic rate so don’t worry about this. Ditching the junk food and eating more healthily should reduce your calorie intake overall and lead to weight loss but as you don’t have much to lose you will may not lose weight very quickly.

      You don’t need to add in any further exercise as 60 minutes walking each day is fine.

      Best wishes


      • Nana on August 16, 2017

        Hi Amber,

        Great, I’m reassured! Merci! 🙂

  • basma ahmed on March 9, 2017

    i couldn’t reply to ur reply ☺
    yes i ate the cheese .. and stopped scince then .. and lost 2kg ..
    now how can i eat cheese again 😯

    do u have a direct chat … like instagram page or somethings
    would be easier to communicate with u

    u r such a big help .. thank u so much

    • Amber on March 10, 2017

      Hi Basma

      If you reintroduce the cheese it will possibly slow your weight loss again so I avoid if at all possible.

      I have full time job and a family. Keeping comments like this helps me to keep all the balls in the air.

      Best wishes


      • basma ahmed on March 11, 2017

        thank you so much already for all the effort .

  • basma ahmed on March 5, 2017

    hi amber .. i was wondering the best alternating rythem to keep losing weight … im taking 5/5 … i havnt lost any pounds in 10 days …. should i take 4 to 3… i dont know why am i not losing any weight …

    • Amber on March 5, 2017

      Hi Basma

      I’d recommend counting calories for a day or two to see how many you are eating as not losing weight for 10 days is quite unusual.

      The rhythm shouldn’t make any difference – just chose the one you find the easiest to follow.

      Best wishes


      • basma ahmed on March 6, 2017

        i really dont know if im consuming more or less than my caroly needs … i found most cheeses low fat more than 2% fat … do i look in the nutriotion facts of the product the fat percent??
        while in cruise phase i really dont know what to eat during the day to accomplish 1200 calory at least … i take about 3 eggs .. i eat any protein at launch salmon or chicken breast or meat … i take 1 skimmed youghrt with the 2 tplspoon oatpran … i try to make dukan bread with oat bran .. what eles can i add as a snack to make it above 1000 calory

        • Amber on March 6, 2017

          Hi Basma

          Are you eating the cheese with more than 2% fat content or having bread and oat bran with yogurt?


          • basma ahmed on March 7, 2017

            i put 2 tablespoon on 1 skimmed yoghurt
            or . i put 2 tablespoon on half cup low fat milk and make it like pudding …

            if i didnt do that …. i made 2 tablespoon oatbran with 1 egg as a bread .. thats for the oat bran

            for the cheeses .. i really found that most cheeses not 2% at all … like i bought low fat modzrella xheese in the nutrition facts said total fat for 100gm is 15 g 20%.. satturated fat 9.75gm 48% !!

            another cheese low fat feta said 16% for 100 gm .
            so what do i look for ?? …. what cheeses can i have ..
            so sorry for long reply

          • Amber on March 8, 2017

            Hi Basma

            Well the oat bran isn’t the problem. Did you eat the low fat mozzarella cheese?

            Are you still not losing weight?

            Best wishes


      • Lynee on July 11, 2017

        Hi Amber,

        I’ve started the cruise phase today and loved adding the veggies. One question can I do lunch times PV and evenings PP as my Rhythm?



        • Amber on July 13, 2017

          Hi Lynee

          I think this sort of mixing and matching could lead to irratic weight loss. It is better to have one day PP and the next PV.

          Best wishes


  • CA on March 1, 2017

    Hi, I gained after 4 days of cruising some of the weight I lost back in the attack phase.. Is that normal and if not, what am i doing wrong

    • Amber on March 1, 2017

      Hi CA

      The most common reasons for weight gain are water retention or constipation or a mixture of both and these very often not due to anything that has been done wrong. I would not be unduly concerned so just stick with it.

      Best wishes


  • Kristine Faraidon on December 10, 2016

    What kind a sausage can I have and how much. I am on cruise phase. How much fat and carbs etc. ??

    • Amber on December 11, 2016

      Hi Christine

      Most sausages wouldn’t be suitable. You are looking for a 100% meat product with 5% fat content and minimal carbs.

      Best wishes


  • Kahy on August 31, 2015

    You talk about the two daily tolerated items. I am unfamiliar with these….where can I find out about these items.

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