It depends on a few factors. Mainly your age and length and strength of cycle. The younger guys usually recover easier, especially on lower dosed shorter cycles. The higher and longer, the more chances of a slow or more difficult recovery of your HPTA. Based on my research and experience, a good PCT consists of some natural testosterone boosters as well as estrogen receptor binding ancillaries (notice I didn't say estrogen inhibiting, because your body must maintain a certain level of estrogen to acheive homeostasis). If you are between 21-25, are on low dosed cycles under 10 weeks long, and have not had any HPTA issues or recovery problems, I would advise to maintain your nolvadex PCT along with tribulus terrestris, and ZMA for a natural test normalizing supplement. HCG is a sure thing to keep your HPTA from totally crashing during cycle. I could go on and on about HCG...........and I will if you'd like, but I think you'll be fine with what I suggested for now.