Why Protein even BCAA's before fasted morning cardio is a bad idea
There is a reason that morning cardio in your fasted state from the night is so effective. It is becasue your blood glucose levels have good down so has your insulin. In fact you are in a insulin deficit upon waking and why that is when lab glucose readings are taken to check for type II..

It well known that fat burning does not happen in the presence of insulin. We also understand that glucose causes the its release into the blood stream. Once that happens fat burning or more specifically released of fatty acids from our bodies into the blood stream to be used as fuel is stopped. As far as how sensitive our panaceas is to glucose in our blood. Only 2 mg of carbs per 100ml is enough for the panceas to release insulin.

Now normally protein only has a very small effect on blood glucose levels and thus has only small effects on insulin release. But of the various aminos BCAA will trigger the largest release.

But beyond that there is an issue and it has to do with one of the reasons why morning cardio is so effective in the first place. You are at your lowest insulin levels. That means the most release and effective burning of fat. The issue is that in that small insulin deficit condition. Any amount of protein will trigger gluconeogenesis. Also the idea that you are burning the protein instead of the muscle does not fly. You are burning the protein turned into glucose instead of fat and have also becasue of that effect cause your pancreas to release insulin in response to the blood glucose and have effectively turn off your fat release and burning ability.

So if you actually want to use morning cardio as a effective way to burn fat as the best rate you do it with in the fasted state.
I pulled this from a abstract:

Insulin is required for carbohydrate, fat, and protein to be metabolized. With respect to carbohydrate from a clinical standpoint, the major determinate of the glycemic response is the total amount of carbohydrate ingested rather than the source of the carbohydrate. This fact is the basic principle of carbohydrate counting for meal planning. Fat has little, if any, effect on blood glucose levels, although a high fat intake does appear to contribute to insulin resistance. Protein has a minimal effect on blood glucose levels with ADEQUATE insulin. However, with insulin DEFICIENCY, gluconeogenesis proceeds rapidly and contributes to an elevated blood glucose level.
It also follows a logical role if insulin is needed to metabolize something as improtant as protein you know its going to have a way to illicit a insulin response to it if there is not enough already present. If anyone would care to test this theory of protein increasing glucose levels . Take a morning blood glucose reading and then drink a protein shake or each a protein meal. Check it again. My be is you will see a jump.

If all or any of this does make sense or doesn't seem right then lets all discuss it.