Re:ECA Question !
Taken from the first page of PB's ECA sticky:
"Ephedrine and Caffeine have been shown to work synergistically; that is, the total is greater than the sum of the parts ie. 1+1=3
They work TOGETHER to promote weight-loss, boost energy and enhance athletic performance. It's debatable as to the importance of aspirin in the grand scheme. It is included in the hope that it acts as a prostaglandin inhibitor and an enhancer of lipolytic activity. I believe it not to be an essential ingredient; indeed, many people are intolerant to Aspirin. Another thing worth noting is that ECA has some anti-catabolic properties, which means that we can retain some muscle even while cutting."
I have never bothered with Aspirin myself.