Methyldienolone is a hormone, but it does not convert to testosterone. This is true even of 1-testosterone. In fact, if it is working, you will see your testosterone levels drop to the levels of a young girl.
Since you are supplying your body with external hormones, your own natural production will slow way down or cease altogether. This is the 'shut down' everyone talks about, and why PCT is so important.

Since you are supplying your body with external hormones, your own natural production will slow way down or cease altogether. This is the 'shut down' everyone talks about, and why PCT is so important.