Yea Admin..i had a book back in the day,i think Bill Phillips wrote it,lots of info on gear! I can honestly say back then i never knew or saw anyone who ran PCTs,i never have,not once! I also never come off,i jus go down to a low dose between cycles..ive also never had any health issuses to date and ive run some crazy ass cycles in my time..but thats jus my .02!