you run it for 12 weeks total... then you run a mini pct which lasts 4 weeks... after you complete your mini, you need 2-3 weeks off before you can start again
OK yeah I'm running s4 alone I just completed a cut and now I am bulking a bit with a month of s4 left. I am 24 5 foot 5 170 pounds and about 11 or 12 bf I have been training about 1 year and a half and am just trying to get a good looking physique