Understanding the Dukan Diet Phase 2: The Cruise Phase
Following the intense, rapid weight loss of the initial "Attack" phase, the Dukan Diet transitions into the “Cruise” phase. This phase is the primary weight-loss stage and continues until you reach your target weight, or "true weight". The central principle of Phase 2 is alternation, where you switch between days of pure protein (PP) and days of protein and vegetables (PV). This alternation prevents diet fatigue and ensures a more sustainable path to your goal. The duration of the Cruise phase depends on how much weight you need to lose, lasting anywhere from a few months to a year.
The All-Powerful Protein Days (PP)
On a pure protein day in Phase 2, your food choices are limited to the 68 lean protein sources allowed in the Attack phase. This means focusing on unlimited quantities of high-protein, low-fat foods. This phase is designed to burn fat and is considered crucial for steady progress.
Approved lean proteins include:
- Lean Meats: Beef, veal, venison, bison, and other game (fattier cuts like ribs are excluded).
- Poultry: Skinless chicken, turkey, and lean ham.
- Organ Meats: Liver, kidney, and tongue.
- Fish and Shellfish: All types of fish, including oily fish like salmon and trout, as well as shellfish like shrimp, crab, and scallops.
- Vegetarian Proteins: Tofu, tempeh, and seitan.
- Eggs: Chicken or quail eggs, prepared without added fat.
- Fat-Free Dairy: Skim milk, fat-free yogurt, cottage cheese, and cream cheese (limited to 32 ounces per day).
Expanding Your Horizons on Protein and Vegetable Days (PV)
On your protein and vegetable days, you can enjoy all the items from the pure protein list plus an additional 32 non-starchy vegetables. This adds variety and essential micronutrients back into your diet. Vegetables can be eaten raw, steamed, boiled, or baked.
Approved vegetables include:
- Leafy Greens: Spinach, lettuce, kale, and Swiss chard.
- Cruciferous Vegetables: Broccoli, cauliflower, cabbage, and Brussels sprouts.
- Gourds and Squashes: Zucchini, pumpkin, and spaghetti squash.
- Root Vegetables (in moderation): Beets and carrots.
- Other Vegetables: Asparagus, artichoke, bell peppers, celery, cucumber, eggplant, fennel, green beans, mushrooms, onions, leeks, shallots, radish, and tomatoes.
Important Daily Additions and Allowances
Regardless of whether it is a PP or PV day, you must follow some non-negotiable rules during the Cruise Phase.
- Oat Bran: Your daily intake is increased to two tablespoons, which should be consumed every day to aid digestion and promote satiety.
- Water: Drinking at least 1.5 liters of water daily is mandatory to stay hydrated and flush out waste products from the increased protein intake.
- Exercise: Daily brisk walking should be increased to 30 minutes to boost metabolism and weight loss.
- Limited Extras: Some condiments like mustard, spices, vinegar, and herbs are allowed. One teaspoon of olive oil for cooking or dressing can be used on PV days. Additionally, up to two tablespoons of goji berries are permitted on PV days, and one tablespoon on PP days.
Foods to Avoid in Phase 2
Certain foods are strictly forbidden during the Cruise phase to maximize weight loss. These include all starchy vegetables, high-fat foods, and most fruits. Common examples of forbidden items include:
- Potatoes
- Corn
- Legumes (beans, lentils)
- Avocado
- Sugary fruits (bananas, grapes, cherries)
- Butter and other oils (except the 1 tsp allowance)
- Fried foods
Phase 2: Protein Day vs. Protein & Vegetable Day
| Feature | Protein-Only (PP) Day | Protein and Vegetable (PV) Day |
|---|---|---|
| Protein Foods | Unlimited quantities from the 68 approved proteins list | Unlimited quantities from the 68 approved proteins list |
| Vegetable Foods | None allowed | Unlimited quantities from the 32 approved non-starchy vegetables list |
| Oat Bran | 2 tablespoons | 2 tablespoons |
| Goji Berries | 1 tablespoon | 2 tablespoons |
| Olive Oil | Not permitted | 1 teaspoon for cooking or dressing |
| Starchy Foods | Forbidden | Forbidden |
| Physical Activity | 30-minute brisk walk | 30-minute brisk walk |
Conclusion
The Dukan Diet Phase 2, or Cruise Phase, is a structured and highly effective stage for steady weight loss. By alternating between pure protein days and protein-and-vegetable days, dieters can enjoy increased variety while still adhering to the low-carbohydrate, high-protein framework. Success in this phase relies on strict adherence to the allowed food lists, daily consumption of oat bran, and consistent physical activity. For best results and to ensure long-term health, it is always recommended to consult a healthcare professional before starting any new diet plan.
For more information on the diet's phases and approved foods, you can refer to authoritative sources like Healthline's detailed Dukan Diet review.