Bro Test400 is a blend of Test esters not Deca as in Deca Durabolin or otherwise Nandrolone. Test400 often contains Test in the Decanoate ester.
Deca aromatizes a 5th the rate of Test. Most people need Test with it minimally and many guys will need a DHT just to balance it.
Uh yeah. You should certainly train and diet first until you at least look fit.
I truly don’t think your know what you’re taking… it’s not Nandrolone / Deca.