^i'd also say with M1T/SD/WHATEVER BUILD MUSCLE FAST, you will also loose your size very fast. as stated, a lot of gains on these can be from water retention, but also, you just put on a ton of size very fast, what's your body's first instinct? get it the fuck off. even iwth added calories, it's hard to retain gains from these. the slower and steadier the gains come, ie andro series, the easier and more permanent the gains will be. honestly, i feel like these super mass builders just suck over all. in terms of potential sides, how one fukin dose shuts you down, and how u can only run em for like 4 weeks just doesn't make em worth it overall. but to each his own.