Dear forum members,

I was wondering if anyone here could help me sort out some bio-chemical reactions in regards to training.

There seems to be 2 types of diets yielding 2 different energy sources for the body when training. The first being the basic hi-carb diet where the body runs on carbohydrates and the other being the ketogenic type diet. On this diet, one burns fat for energy.

Here is How I understand it. Please correct me if I am wrong. If one eats lots of carbs and their body is used to running on that, then carbs will be used in a workout first followed by burning protein (from muscles likely) for energy. Some small amount of fat gets used in there as well.

On a ketogenic diet, one burns fat first from intra-cellular fat sources, then the carbs from the liver and lastly from protein.

Assuming the above, here is my question: If one is on a low carb diet but hasnt, for whatever reason, reached the state of ketosis with the limited amount of carbs they are eating, will there be a general lack of energy in workouts since the body is still running on carbs? And hence an overall weakness until one either ate more carbs or got into ketosis? It seems to me that a general low carb diet where ketosis hasnt been achieved would just lead to the cycle of carbs being used first for energy then protein, which would lead to mucscle wasting since the body has so little carbs. Is this line of reasoning correct?

Any help would be greatly appreciated. If possible, please stick with the science of this pertaining to body-chemistry more then just opinions as to which diet people think is proper for training. I am trying to grasp all this from the perspective of biology as that will help me know whats best for me.

(As an aside, my general diet is high fat, moderate protein and low carb. However, this is mainly due to scicence and research I have done on how to be healthy and what is natural, not specifically for training. If ya dropped a person in the middle of nowhere for example and said survive for a year, their diet would end up being high fat/protein from animals and low carb as they would only be available in season mostly. I am just concerned with whether I am getting to many carbs or too litte as pertaining to my above question.)

Anyway thanks again for any help you guys may have.
God Bless,
Jeff