For a clear mind, just think logically - how many training units per muscle group are we able to do in 6 weeks? especially when it comes to advanced lifters 6-10? how much hypertrophy will occur after one training unit? after all, these are not the amounts that will give us a phenomenal increase. Moreover, everyone who trains longer knows that in order to maintain new gains, the body must enter a certain type of homeostasis and accept fiber overgrowth, otherwise we will quickly lose what we have gained, so even if after 6 weeks there was only anti-catabolism without anabolism, it is still beneficial was to use this period as a time for homestasis.
If you already have short cycles, it is on the principle that Dante Trudel gave, i.e. 8 weeks blast 2-3 weeks crusie and not because of diminishing gains or health issues (because bodybuilding has nothing to do with health), but because very intensive training through period longer than 8 weeks + large doses of food will fatigue our body, so we give short time to rest for the nervous and digestive systems.
This is my opinion.
while much of what the op posted in here get kookie bro, there is much more to training and gaining the just drugs.
i feel the biggest component is cns. this is rarely talked about amount juice heads. creating new nerve innervations is what builds strength. mantaining them and making more is how we can change the body and add real growth especially when we combine training that takes advantage of this with diet and gear.
it takes 6-8 weeks in general to create these new nerve innervations.
if take all this into account and really follow dc principals it all kinda works. as you blast, creating them and cruise allowing the recovery process to happen then blast again to create more.
drugs are used to support training by and large if all done right.
drugs also work as make up basically. due to creatine and water load and manipulating water under the skin. this is why for contest prep you load up. the drugs at that point are like muscle make up, making you big n full n pretty.
first you gotta put the mass on. that is done with food, heavy weights and drugs to support that to some degree.
this is why you see guys who have been doing this for 20+ years able to walk around with impressive amounts of mass on just trt doses.
cns due to adaptation becomes more efficient with time so it takes less to support the new inervations and if you have eaten to put the mass on and stick with the gym even when cruising you end up with a big old dude who is strong as shit and that isnt going anywhere as the work has created those new set points.