Building muscle with pfs...is it possible?

I’m about to start a muscle building fitness regimen. I would like
for anyone that has successfully built muscle with pfs to chime in. Was building muscle harder or was it the same prior to pfs?

its a case by case thing.

It is possible, but you will not get same results pre-fin. I found muscles reacted quickly and made good gains but then actually started leveling off and then believe it or not, started getting weaker with each week that I lifted. I’m 45 and was able to do 3 reps of 225 on the bench press at the peak.