this is from personal experience only! I take the dbol from week 5th or 6th on for 4 weeks only! at this time the test has already kicked or beginning to build some muscle so the size and strenght gained wiht the dbol has some muscle to back on whenever u stop the dbol aroumd week 8th or 9th and continue on test for another 4 to 6 weeks. this way when u notice gains form test th gains that d bol brings are better and more keepable! if it is used like in the regular cycles from week 1 to 4 most of the gains are water and the test had not build your muscles strong enought to keep wiht the strenght gains form dbol! so like I said it makes sense to meee and is just from personal experience how I like to use it!