Mast is a great AAS to add to the end of a cycle to harden up. I prefer using masteron prop. I usually inject eod which would be 3 or 4 times per week. I run 200-400mgs per week. Usually 100mgs each inject. You should throw in some Winny with it. for a four week run at the end. That is a great cut cycle. I prefer the prop ester because it is stronger per mg and it kicks in and leaves the body much faster. Winny can be injected with it eod at 50-100mgs each time. This will provide some serious hardness. Be careful which water based Winny you use though. Water based steroids are prone to bacteria. Only one I will use is Asia Pharma or British Dragon. WP has some great deals on Winny that are great for the quality you recieve. The AP winny isn't any more painful than injection Test from most UGLs. Even better than some. There was hardly any pain at all. Enjoy whatever you choose.