Quote:
insert source please
muscle and fat are two different tissues you know that right?
Errrm, yes I know.
Now we are not talking fat as in adipocytes, that is the cells that store fat. Fat is also a commonly used name for lipids and shit.
Muscle cells use 2 different types of energy apart from protein, it is sugar (glucose) and fat (lipids). Both of these sources of energy can be broken down to form ATP which is what the cell uses for everything that needs energy.
One of the reasons why it is difficult to give you one source of information is because this is scientific stuff and has been discovered over a lot of years by a variety of research groups. I dont know if having the actual text would help you anything though...
As you see, this is just a small selection and what you you can see here is just the summary. If you wanna see the entire study I suggest asking at your local university.
http://www.ncbi.nlm.nih.gov/pubmed/15931617
http://www.ncbi.nlm.nih.gov/pubmed/2881651
http://www.ncbi.nlm.nih.gov/pubmed/20332421
http://www.ncbi.nlm.nih.gov/pubmed/19651377
Anyways, have fun.