Been stuck on 190 lbs for about 3-5 months now to be honest. Got back into working out around May, but in terms of weight, pretty much exactly the same unless my scale is effed up.

I can tell some areas are a little more defined than before, don't know if that might explain why I haven't been losing weight.

Haven't been doing much cardio either which COULD be another problem why I haven't been losing weight. I am usually too tired after the workout to do any kind of cardio, so I skip out on it.

Now a question, I am a guy that really doesn't like taking anything unnatural. Is protein something natural to take (as in the protein shakes)?

What about the workout energy stuff? Can either of those help me progress better in terms or working out? Or is protein something I shouldn't be taking unless I want to get to my weight goal?