The Science/Background
The science behind the CKD is simple. Carbohydrates consumed in your diet cause an insulin (a "storage" hormone) output in the pancreas. It is used to store glycogen, amino acids into muscles, while causing excess calories to be stored as fat. So common sense asks me, "How can one try to break down fat, when your body is in a storage-type mode?" Difficult to do, indeed. That is why it makes perfect sense for step one to be cutting carbs. The next thing that happens in your body is the rise in catecholamines (a "fat mobilizing" hormone), cortisol (a "breakdown" hormone), and growth hormone. Now your body realizes there’s no more carbs to burn for energy, so it must find another energy source: fat. This usually happens during a metabolic condition called "ketosis." This is when your liver is out of glycogen and starts to produce ketones (by-products of fatty acids). You can check your status of whether or not you are in ketosis with urinalysis strips you can pick up at any local drug store called "Ketostix." Just urinate and see if it turns color. If so, you have ketones in the urine. When the body is fed fat and protein, it will use dietary fat along with bodyfat for energy with protein going towards repair. As a side note, there is another reason why this diet makes the most sense to use while keeping muscle. When one follows a high carbohydrate, low-fat, reduced-calorie diet, there’s a point when some bodyfat is burned, but when the body is still in a carbohydrate burning metabolism while trying to lose "weight," it will strip down precious body protein to convert to glucose for energy. On the other hand, during fat metabolism, protein cannot be converted into free-fatty acids for energy. Although there is no scientific research done on this, there have been reports from followers that there truly is a "protein-sparing" effect. It makes sense doesn’t it? Where else would the body look for fat energy when all dietary fat is burned? Bodyfat. Additionally, many of you and myself included, have tried the "low carb" approach, which gets you border-line to ketosis, but your brain/body is still using a combination of carbs and ketones for fuel. The issues is that w
hen you go low carbs but aren't yet in ketosis, your brain will crave carbs for energy and you get sugar cravings. When ketones are being produced, the brain will use them instead and you won't crave carbs, so those cravings will go away, a far better physiological and psychological state in the long run.
If you are interested in reading more and want additional science/technical write-ups: Perfect Health Diet and Dr. EadesProcess/Rules
1) Foundation: Start with a 10 Day Recalibration. Follow an ultra-low-carb diet for 10 days, eating 30 grams of carbs or fewer per day. Hence, nutritional %'s: 70% fat, 25% protein, and ~5% carbohydrates (<30G). During the 10 day process (it can take from 7-10 days on average for most people, hence the use of 10 days), body will switch over form using carbs to fat as fuel, a far more efficient approach (as fat has 9 calories in it, whereas carbs has 4 and has less favorable hormonal response).
2) Ongoing: Enjoy a "Carb Load" on the 10th day and once a week thereafter which entails a focus on eating carbs, on a single day during a specific window. Nutritional %'s for this window only: 10% fat, 30% protein, and 60% carbohydrates. Kiefer recommends 5pm-bed, however in FAQs, shows flexibility and I am going to recommend 12-8pm to correspond with circadian rhythms, metabolism speed, and consistency (he recommends a 6-8 hour window in total, though Dr. Willey recommends a 3 hour window, so would aim for between 3-6 hours of consumption). After the 10th day/recalibration period, continue on <30G per day 6/7 days (may be able to get away with 50G, must monitor using Ketone Sticks), taking in those 30G of carbs pre/post-workout meals ideally and then enjoying a Carb Load one day a week. Ensure that Carb Loads are 4 full days apart (e.g. would recommend, as in 4HB, picking a day - Tim Ferriss and I both prefer Saturdays - or planning for it in specific weeks, for example around an occasion, for holidays/parties/etc.). No need to count calories on this diet, the % mix you are getting from each of three nutrient groups is the critical area of focus - so, eat to satiety, but maintain your ratios!
3) Maintenance: Cycle the CKD approach: 6 Month on and then take a break for 1 month.
Carb Load Rules:
- Time period: 12-8pm (aiming for 2 meals + 1 snack) and aim for 1 day a week only, at least 4 days apart from prior Carb Load
- Nutritional % goal: 10% fat, 30% protein, and 60% carbohydrates
- Avoid soft drinks and fruit juices (high concentrations of fructose in these make you fat and fail to create any of the beneficial hormonal responses)
- Focus on Classical Carbs and avoid Bulk Carbohydrate Sweeteners (below)
- First meal for Carb Load, should be a full meal, including lean protein and plenty of starches like break, pasta, rice, or potatoes.
- Make sure to treat yourself to bread, pasta, pie, cobbler, cookies, and other bakery items - eating sweets is good, but go for the specialty/homemade versions, as mass-marketed items contain large amount of trans-fats and high-fructose corn syrup.
- Drink plenty of water/fluids and electrolytes, as your body is going to store some of those carbs in your muscles along with a lot of water - helps prevent muscle breakdown
- Why the Carb Load? Quoting Kiefer, the Carb Load: "One 6-8 hour Carb Nite, solves the problem of falling metabolism and hormones, ignites excess fat burning,helps prevent a diet relapse, keeps the body confused, fat cells become extremely disoriented (the low levels of insulin together with skyrocketed levels of leptin, instruct fat cells to empty out while already being empty - killing fat cells."
- Summary: On Ketogenic days (6/7 days a week), avoid any Traditional Starches (Rice, grains and cereals, breads/crackers, rice cakes, and any flour-based food), Legumes (Legumes of all shapes, sizes and colors - Pinto beans, garbanzo beans, lentils, peas and lima beans), Fruits, and Starchy Veggies (Sweet or white Potatoes, corn, parsnips, pumpkin, squash, yams and plantains). Most Ketogenic diets (including both Kiefer and Willey's) allow for Dairy, cheese specifically (as it's high fat/protein, no carb), however, as discussed in the original Carpe Life nutritional rules, dairy has a high insulinemic response and will impede weight loss.
Approved Foods on Ketogenic (<30G of Carbs) Days - effectively stay away from all high-carb foods in order to keep total daily carbs below 30G! |
Vegetables: Alfalfa Sprouts, Arugula, Asparagus, Baby Spinach, Celery, Green Olives, Kimchee, Pimientos, Romaine Lettuce, Watercress, Mushrooms |
Nuts & Seeds: Flax Seeds and Pumpkin Seeds - Hulled, other low-carb density nuts |
Egg Products: Egg Whites and Liquid Egg Substitutes |
Seafood: All seafood except Scallops and Squid |
Poultry: All poultry |
Red Meat: All red meat, except Salami |
Pork/Sausages: All lean pork/pepperoni/ham, except no panceta, prosciutto, salami, Spam, or chicken-apple |
Baking goods: Baking soda, flaxseed meal, guar gum, and xantham gum (no pure vanilla extract, cocoa powder, almond meal, etc. |
Salad dressings: All no-carb/low-carb options |
Condiments: All except Soy sauce, lemon/lime juice, and au jus |
Risky Product Ingredients (bulk carbohydrate sweeteners, artificial trans-fats, or poor quality proteins): Fructose, Glycerin/Glycerine/Glycerol, High-fructose corn syrup, Hydrogenated Starch Hydrolysate (HSH), Isomalt, Lactitol, Maltitol, Mannitol, Sorbitol, Hydrogenated Soybean Oil, Hydrogenated Cottonseed Oil, Hydrogenated Vegetable Oil, Hydrogenated Canola Oil, Xylitol, Hydrogenated Palm Kernel Oil, Collagen, Erythritol, Gelatin, Mechanically Separated Chicken or Turkey |
Special Supplements on CKD:
- Leucine and Lysine amino acids - the only two pure Ketogenic amino's, helps retain muscle and keep you in ketosis
- Short/medium-chain fats as primary fat source - coconut oil or preferably, pure MCT oil (medium chain triglycerides) - purely Ketogenic fats and fast acting to provide Ketones for energy
- Psyllium Fiber (digestive health)
Workouts on CKD:
- Workout Nutrition: Pre-workout (shake or real food) - High protein meal (20-30G and ~10G of Carbs; In-workout - Amino Acids/Electrolytes only; Post-workout - 20-30G of Whey Protein (or blend of Whey/Casein) + 15G of carbs + any supplements.
- Cardio: HIIT and high intensity training overall is very difficult on the Ketogenic Cycling Diet, so it will be used minimally and only after you've re-loaded your Glycogen stores, so stick to 1 hour of steady-state cardio (at a heart rate target of 120-140BPM)
- Workout Schedule:
- Monday: Steady-State Cardio
- Tuesday: Off
- Wednesday: Weight-lift Workout - Lower Body
- Thursday: Weight-lift Workout - Upper Body
- Friday: Off
- Saturday: Weight-lift Workout - Whole Body Cycle (Pre-carb load)
- Sunday: HIIT Cardio