Go read that section on BSL forum, the undercover pro goes into the cycling, use of GH, Insulin and has some example cycles. It will not be what you expect and many change up compounds every 4-6 weeks as opposed to the way many of us do it in 8-16 week intervals with the same things with the occasional change with tren or orals added in or dropped.
Very well said, I think that people think that there is some secret weapon that they're using and we don't have access too. They take the same compounds that we here all have access to. Keep in mind that most pro's are what... mid 30's and have been lifting for 10-20 years nonstop. Also, with the amount of gear and food they consume over a period of time like that you are going to grow. One of my friends who's an IFBB pro laughs all the time when he see's these "supposed" cycles that members put up. Here's what allot of pros do do though... Like Oufinny said, allot of pros switch there gear more often than remaining on a dose for a prolonged time. Kind of like doing short high dosed blasts of a certain ester, even if it's as close as Cypionate and Enanthanate.
Here's an example of what a short high dosed mini cycle would look like... then on day 15 continue with maybe insilun with a high dose hgh & T3 for a couple weeks and then back on to blast with another mini cycle. Doing cycle's like this will SHOCK the body and induce extreme growth. Keep in mind that these pros are consuming thousands of calories from high quality sources and don't work a day job like you or me.
Day
1. 300MG Test. Propionate/50MG Dianabol
2. 300MG Test. Propionate/50MG Dianabol
3. 300MG Test. Propionate/50MG Dianabol
4. 300MG Test. Propionate/50MG Dianabol
5. 300MG Test. Propionate/50MG Dianabol
6. 200MG Test. Propionate/40MG Dianabol/100MG Primobolan Depot
7. 200MG Test. Propionate/40MG Dianabol/100MG Primobolan Depot
8. 200MG Test. Propionate/40MG Dianabol/100MG Primobolan Depot
9. 200MG Test. Propionate/40MG Dianabol/100MG Primobolan Depot
10. 200MG Test. Propionate/40MG Dianabol/100MG Primobolan Depot
11. 100MG Test. Propionate/30MG Dianabol/100MG Primobolan Depot /50MG Winstrol Depot
12. 100MG Test. Propionate/30MG Dianabol/100MG Primobolan Depot/50MG Winstrol Depot
13. 100MG Test. Propionate/30MG Dianabol/100MG Primobolan Depot/50MG Winstrol Depot
14. 100MG Test. Propionate/30MG Dianabol/100MG Primabolan Depot/50MG Winstrol Depot