Lipolytic suppression following carbohydrate ingestion limits fat oxidation during exercise
The main point is that Lipolysis, or the release of fatty acids into the bloodstream, slows down after a carb meal. No Lipolysis = No Fat Burning.
BUT THIS IS FAR MORE INTERESTING:
In the fasted control group (overnight fasting, about 14 hours), the rate of lipolysis exceeded the rate of fat oxidation. In other words Fat is being released into the blood stream faster than the body can burn it for energy!
What this translates to is a fasted workout is a fat burning extravaganza.
So yes, unless your a bodybuilder obsessed with gaining girth on your thighs, workout fasted at leasted 3 times a week.
"Hmm, very interesting Mike."
"Thanks Professor Japhy!"