In a previous post I said that I would investigate the reason why the body would burn muscle, when fat is stored specifically for the purpose of providing food during hard times.
This information has been difficult to find but it seems that the general concensus is that the body would not need muscle in times of starvation (I somehow doubt this as if I were a starving hunter gatherer and saw a bunny loping past, I would want my muscles double quick!)
Anyway, the reason muscle is burned is that it converts to glucose which is a quick boost. As I’ve already said, fat needs to be converted to ketones and this process is slower and the effects less instant.