When you are on the weekday high-protein/high- fat/low-carb portion of the diet, you will probably find it helpful to try to vary the foods you eat. You also might find that, no matter what you start with, you may very well end up wanting steak as your staple meat. That's fine.
The key on this diet, during the week, is to eat whenever you are hungry. You do not have to follow the clock or go by our traditional meal times. This eating "schedule" will be different for each person and if you are eating when you are hungry, you will very quickly find what works best for you.
Having said this, there are two rules that I do want to give you for timing your eating. One is, do not go more than three hours without putting some kind of calories into your body. The second is that you should not eat 45 minutes to an hour before a workout. Aside from these two rules, you can do what you like with regards to timing.
Another, maybe more pertinent question is, when to eat the carbs you are allowed during the weekdays. This is also a personal preference and you will find whatever works best for you. Some people eat their 30 grams throughout the day while others eat it in one sitting.
Having said this, many people find that if they eat their carbs throughout the day, they feel hungry more often and they feel more sluggish. Many people prefer to leave most of their carbs until later in the day, maybe suppertime, and then they relax and sleep easily at night.
You will need to experiment with every part of this diet because each and every body is different. All of the numbers given are guidelines only and you might find you only need 20 grams of carbs during the week, or you might need 40 grams. You might want to start at 10 grams per day and increase it as time goes on. You will stop increasing when you get to the point at which you feel your best and this will be your optimum carb level.
It is crucial not to limit your fat intake. Remember, you will not get fat just from eating fat. In fact, you will get fat by not eating fat. Really! Your body will burn the fat, but if you are not getting enough of it, you will find that your body will actually start storing the fat it does get in order to conserve it and you will end up burning muscle instead.
What about the weekend? When do you eat all those delicious carbs you have been dreaming of all week? It's the same schedule as during the week. Eat when you are hungry! Your body knows what to do and it knows when to signal you. Trust it and listen to it.
The final thing I want you to note before we talk about the actual phases of the diet is that your endurance will not be affected by the high-fat content of the diet. You might find your endurance is lower during the first weeks of the diet, before you reach your metabolic shift, but once that happens, you will find you have a great deal of energy.