The benefit is in its ability to reverse atrophy. Let me try and elaborate a bit. When on a cycle our testis stop producing testosterone and at the same time our bodies also stop producing LH which in turn triggers a response from the testis. So while on a cycle we actually have a whole sting of things not being released(or in diminushed qty) due to the existance of external androgens. Clomid/nolva do nothing directly to the testis. They block the estrogen receptor and fool the body into thinking there is not enough testosterone and hence start the release of LH which in turn will affect the testis. Clomid/nolva will not fool the body into producing LH while on a cycle because the body also monitors androgen levels and if they are high, even in the absence of estrogen, LH will not be produced.Directly taking HCG is like injecting LH and will get the testis going, even if high androgen levels. What that means is post cycle when you go to start clomid it should work faster at spurring on test production since the atrophy from lack of functioning has been reversed since the testis were forced into producing by the HCG.