Playing with Ketosis

Ketosis: If the diet is changed from a highly glycemic diet to a diet that does not provide sufficient carbohydrate to replenish glycogen stores, the body goes through a set of stages to enter ketosis. During the initial stages of this process, blood glucose levels are maintained through gluconeogenesis, and the adult brain does not burn ketones. However, the brain makes immediate use of ketones for lipid synthesis in the brain. After about 48 hours of this process, the brain starts burning ketones in order to more directly use the energy from the fat stores that are being depended upon, and to reserve the glucose only for its absolute needs, thus avoiding the depletion of the body's protein store in the muscles.
The below is borrowed from 

Kickin' Carb Clutter

"There are several ways to go about getting into Ketosis. Here are three, but I'm sure there are others. These are just the ones I am currently aware of. Each method is designed to get you into a fat burning metabolism within 3 to 5 days, after which you can then choose (with the help of your doctor) which low-carb Plan/Path you are going to follow.


Kimmer's Experiment (K/E)Eat as much lean protein as needed to satisfy hunger (lean meats, poultry, fish, eggs)
Basic condiments and spices are okay
Diet beverages, coffee and tea as desired, w/o cream, but a bit of sugar sub okay
Diet gelatin limited to 1 cup per day
Chicken and Beef broth okay, homemade prefered
No alcohol, no cheese

Meat and Egg Fast (M/E)Eat as much protein as needed to satisfy hunger (meats, poultry, fish, eggs, cheese)
Fats are allowed in reasonable portions (including cream, and poultry skin)
Diet beverages, coffee and tea as desired
Sugar substitutes okay
Spices and Herbs w/o sugar, Extracts, Mustard, Horseradish, Vinegar okay

Atkins 72 InductionEverything on the M/E list plus:
2 cups of loosely packed mixed greens with celery, cucumber, and radishes
Salad Dressings without added sugar are okay (moderate portions)
Juice of 1 lemon or lime
Chicken or Beef broth okay
Diet gelatin okay
Cheese, up to 4 oz per day of hard aged cheese (no cream cheese or spreads)
Heavy Cream, up to 4 tsp per day

Eat in accordance with your appetite. Do not go hungry. If you are hungry, EAT. Don't worry about calories. These Ketosis-inducing diets are not about weight loss. They are about ridding your body of glycogen and switching your metabolisms from burning sugar/carbs to burning fat. Once Ketosis is entered, your appetite will take care of its own calorie reduction. "