I ran a 12 week Primo/Var cycle with 4 weeks Tren (in the middle @ 50mg ED) and 250mg EW Test (TRT dose). Great cycle, leaned up nice, not too hard on me at all (and I'm 42 y.o.). I think Tren-sides all depend on dosage and length. I'm ever-vigilant about the ol' libido at this age. HCG is the shizznitz!