this is one way of looking at Andrew’s question. However, by him posing it on this portal, he gives all of us an impetus to think about a subject that I, for one, have never given much thought. Thus I will be interested to see some of the answers.
“Intramuscular triacylglycerol (IMTG) represents an energy store that can be used during exercise, when it may contribute up to 20% of total energy turnover depending on diet, gender, and exercise type.”
According to the BodyBuilding website, sticking to a regular exercise routine will cause you to burn intramuscular fat and calories even when you are not physically active.
After looking into it I kinda get the impression that intramuscular fat is when the body prepares energy, but can be unhealthy if not used. It looks like this is based namely off of proteins, as it is often seen in athletes.