Quote Originally Posted by shifty_git View Post
Like morph said, short chained esters are more irritating to muscle fibres. (to do with size)

So as the muscle then breaks down a prop ester quicker that 'sting / pain / irritation' is released in a quicker burst, so will be more intense as its a higher dose of pain in a short amount of time.

Long esters themselves are less painful, and then released over longer amounts of time - so feel much easier.

This is why then obviously as the concentration is increased, something like a prop ester will have a much more noticeable effect than say an enan ester.
i am usin a ugl prop/tren and i dont get that sting/pain/irritation.. ive been hearin it could be from the BA or whatever?