High levels of
intratesticular testosterone, secreted by the leydig cells, are necessary for spermatogenesis. The
exogenous administration of testosterone and its metabolite estrogen will suppress both GnRH production by the hypothalamus and LH production by the pituitary gland and subsequently suppress testicular testosterone production. High levels of testosterone are needed
inside the testis and
this can never be accomplished by oral or parenteral administration of androgens.
Through its effects on the HPTA, AAS-induced suppression of testosterone production by the leydig cells will result in a deficient spermatogenesis, and lead to
an irreversible death of testicular cells.
The choice is, as always, yours to make. You can
protect your gonads throughout the cycle, or try to
salvage what's left at the end. The choice seems obvious to me.
So, if I am running ((starting Monday

))
wk 1-20 Test Cyp 600mg wk
wk 1-15 Deca 400mg wk
wk 14-20 T Bol 40 mg
...it would be best to run Hch while on? What would be the best dose/admin? I would be injecting something every day of the week, damn!