Definately agree with Bertuzzi. I am far from an expert but unless you are truly at that level of Body building its probably would be smarter to at least (bare minimum) use your cycle time as the same if not more for your down time ie. cycle 12wks off 12wks. As Bertuzzi said the PCT could even be included so you have more time in between cycles to make sure your body is getting back to normal. You dont want to get sloppy or rush and stop your body from being able to make natural Test thats why a break and PCT is a good idea. I am sure there are some folks on here that can get a hole lot more scientific with it and I'd recommend listening to what they have to say. Good luck!