However, I do agree with TestTrening, as there would probably be a lot of psychological effects of just doing one cycle. I know that for me personally, I started feeling like training was pointless during my breaks because I wasn't seeing any progress and was actually going backwards from what I had been able to do on cycle. It was depressing, and I actually took a break from using entirely after feeling like that because I didn't want to be so dependent on the drugs. It might vary from person to person, but you might always find yourself comparing yourself to how you were when you were on cycle, at least I know I did.
When first administering steroids, a man will have an increase in sexual function. This unfortunately is only temporary as your body becomes used to the steroid in its system. With prolonged use of a steroid, eventually, the man will feel less sexual desire, and will be less capable of maintaining an erection. Luckily, this is only temporary as well and can even be totally prevented with the use of substance such as Gonakor and HCG. Also when the steroid use is discontinued, the body’s natural level of testosterone (like the immune system) will certainly be suppressed.