You can cycle without being totally shutdown by cycling with certain steroids for small periods of time (4-6 weeks). Test, Deca, NPP, Tren, Anadrol, Superdrol are a no no with this practice as all these drugs completely shutdown the HPTA.
You can use Masteron, Dianabol, Proviron, Winstrol, Anavar, Oral Turinabol,
Primobolan Acetate and probably Dimethazine.