This diet is great, because you can keep hold your cravings for the carb up day, and eat what you like then and not put any fat on, within reason
I've had to add back my morning breakfast cereal (2xWeetbix biscuits) and low fat soy milk, as I've been hitting the dumps at night after I took it out. Ketosis, it feels like a low blood sugar effect but kinda different
This gives me an extra 40 grams of carbs. You may need to add some extra carbs depending on how much veges you eat. Just make sure you have some meat and veges to accompany the carbs as well.
As far as how many calories I'm eating, probbaly not a lot. I'm not really counting em. But if you think about it, on a normal diet, at least 50% of your calories will come from starchy carbs, so if you cut them out, you've halved your calorie count just like that! On my Carb up days, I eat a lot, at least 500-1000 calories over my maintenance figures.
On my low carb days I eat my breakfast cereal with soy milk which is good for 100-150 calories, plus a tiny bit of meat and veges
Hmm I eat no more than 2-3 average sized chicken breast fillets a day, and I'll have a tiny portion of steak every so often, add a handful of raw nuts like almonds, and tons of lettuce and other veges which don't have that many carbs and calories. Plus whatever calories I get from the fish oil supplements I take.
My advice is to eat the same amount of meat(protein) your would normally eat to maintain your bodyweight, plus a tiny bit more, and just remove the starchy carbs and replace em with as much veges as you can eat. Eat some stuff with good fat like raw nuts, fish and flax oil etc. Get a good calcium and multivatiamin supplement with co-factors to help you absorb it. I've been told that taking this after the last meal is the best time for it.
No fruits though. You may need to add an extra 20-40grams of carbs a day depending on wether your body hits ketosis or not. You will know when you do
Also spread all this over 6 meals, and eat every 2 to 2.5 hours. if you chew and nibble everything real slow, you will actually feel too full! It takes practise though
Your muscles are being fed by the protein you take in, anything else the body wants will be taken from the bodyfat since the carb intake is greatly lowered.
You should feel energetic if everything is done right.
And lastly you must carb deplete with weights and exercise on the first day of each low carb cycle or else the effectiveness of the diet is greatly reduced. You will feel good on that day, since its after the carb up day
I try not to do anything on the carb up days if I can help it.