I have changed my view on HCG. I dont wait for the atrophy to set in anymore. I take 500ius 2 times a week throughout my cycle. This low dose wont desensitize you from lh, but will produce enough to prevent atrophy from setting in. I learned the hard way that some atrophy will not revert! If I had been using hcg this way in that particular cycle, I would have 2 fully functional testicles.
So in short...dont wait for the atrophy to set in. Take strategic small doses throughout yopur cycle to keep a small LH signal flowing. This small signal will keep the testicles producing small amounts of test, which in turn will prevent any atrophy from setting in.
I look at it this way...you give your car an oil change so the engine doesnt break down, which is preventitive maintenance. Use the HCG in the same mannor.