i was using n.o. shotgun for the past 12 months about 3 times a week in average.there was period i was using it 5 straight days,also sometimes i was not using for the whole week. in the recent time i dont feel same effect as i just started. im planing to cycle off for a month and then to start with n.o. explode. in future i plan to use n.o. explode 3 months on 1 month off. i hear many stories...month on,month off. jug on,month off. 2 weeks on,2 weeks off. whats the best? also if im trying to gain massive size,is there difference between no xplode and jack3d or any other pwo??? thx.