I'm about to start my first cycle of HST after taking a week to find my 15, 10 & 5 RMs and now twiddling my thumbs, so to speak, for 9 days of SD. Been reading Bryan's FAQ's over and over. At last some of the more scientific stuff is starting to stick! On the section about AAS and Prohormones Blade says: So what I'd like to know is: How much in the way of gains can a natural bodybuilder expect to make assuming that he does everything correctly according to HST & HSN guidelines? I realise that everyone has their own genetic potential. For example, my misses has bigger calf muscles than me (inherited from her pop). She obviously has more muscle tissue there to begin with than I do, even though I'm carrying around 13 stone and she's about 10 stone. For me to even reach her 'normal' size will require lots of growth Let's say I have average potential. I'm 5'10", 32" waist, weigh 182lbs and I don't carry much fat (my six pack is a bit blurry though!). For example, lets take arms: I currently have a 15" flexed upper arm. Am I likely to ever be able to get a 16" upper arm measurement (or larger ) from increased muscle mass? I'm really hoping that others out there will have started like me and exceeded my goal! Many thanks for any feedback.