One thing not mentioned here is health. Elevated blood pressure, rbc, lipids/cholesterol, kidney and liver values as well as lowered hdl and testosterone suppression all take it toll on the body. I know many people who stay on extended periods of time that keep upping the dose and will actually regress. Remember the body grows in spurts. Figuring out how long that spurt is and what you need to maintain that is key. Also keep in mind doubling the dose does not equate to double the gains. You also need to find the point of diminishing returns. There are ALOT of people running way to much gear as a substitute for hard work. Dr Rand has sited studies showing test can be safely run for extended periods at up to 6x's the standard trt dose. Now in no way would I ever condone this during a cruise, but I found it interesting. Choose your blasts as you will, but I would limit them to 12 weeks. For a cruise, I've found I have no problem holding muscle on 200mg test/200mg deca/npp per week with a bit of modification in my training, and with peptides and/or hgh, there is a good chance to even continue gains through a cruise. Cruising gives your muscles, tendons, cns, and even your mind a much needed break and decreases the risks of future health issues. Sadly in this sport, by the time we realize our mistakes it's to late.