Where are you getting this? This doesn't seem accurate. Can you cite some references to this? What do you mean by preparing to convert? What specifically is there more / less of that makes it easier to convert fat / food into blood sugar.
Carbohydrates are broken down into glucose whenever they are present in the body. The liver does this through the process of glycolysis. It doesn't have anything to do with sleep. In fact, when people are sleeping they are fasting for about 8 hours (hence break-fast). When glucose is present in the blood stream insulin is released to store the energy in the cells. Insulin also inhibits fat release.
The low energy crash you are referring to is only present in people who have heavy carb diets. Under a healthy individual 2 pathways are used to produce energy in the absence of food.
Gluconeogenesis converts protein and a little bit of fat into glucose. The amounts are usually pretty minimal though.
Ketogenesis is when the body converts fat to ketones which the body consumes for energy instead of glucose.
For people who are diabetic, overweight, or normally eat carb heavy diets the ketogenic pathway is impaired and so they feel low energy.
People who have properly functioning ketogenic pathways don't really experience the low energy state you are referring to unless it is the food comma after a carb heavy meal when insulin has overreacted.
When insulin is low and there are ketones present in the body people will not feel low energy.
Carbohydrates are broken down into glucose whenever they are present in the body. The liver does this through the process of glycolysis. It doesn't have anything to do with sleep. In fact, when people are sleeping they are fasting for about 8 hours (hence break-fast). When glucose is present in the blood stream insulin is released to store the energy in the cells. Insulin also inhibits fat release.
The low energy crash you are referring to is only present in people who have heavy carb diets. Under a healthy individual 2 pathways are used to produce energy in the absence of food.
Gluconeogenesis converts protein and a little bit of fat into glucose. The amounts are usually pretty minimal though.
Ketogenesis is when the body converts fat to ketones which the body consumes for energy instead of glucose.
For people who are diabetic, overweight, or normally eat carb heavy diets the ketogenic pathway is impaired and so they feel low energy.
People who have properly functioning ketogenic pathways don't really experience the low energy state you are referring to unless it is the food comma after a carb heavy meal when insulin has overreacted.
When insulin is low and there are ketones present in the body people will not feel low energy.