Well this is a very simple concept.
The first thing you have to do is establish at what point the primary injectable AAS used in your cycle will begin to fall off to levels well below physiological norms. There needs to be miniscule levels left to make 'room' for your own natural testosterone production as your body will only allow a finite amount of hormone before it shuts down the hpta.
Keep in mind that only about 2 % of all natural testosterone is FREE - available for binding to the AR. This means that if you still have any 'nandrolone' for example releasing into your body, that will further reduce the ratio of testosterone to other left-over exogenouse sex hormones left in your body from your cycle. These need time to clear, but if you don't use any exogenous test while these clear, your libido will suffer.
Keep in mind that these other steroids aromatize, also, converting to estrogen and progesterone which further cause suppression. These hormones pile up over the length of a cycle. Estrogen and progesterone are nasty hormones to the male body in high doses, as they can cause testicular cell death, and have longer half lives then testosterone- meaning they stick around longer causing suppression.
This is why a 'crash' occurs, as male hormones are depleted suppression is still present due to the accumulated levels of estrogen and progesteone.
At this point you can treat the problem with clomid or nolva, but recovery will only work as long as the estrogen is held at bay, and it won't work if progesterone is present, no matter how much clomid is used.
The better approach is to use an aromatase inhibitor during the cycle to keep estrogen levels from rising. And end your steroids that convert to progesterone earlier to ensure progesterone caused suppression is not a factor at your cycle's end.
At the end of the cycle providing you have kept estrogen in check, ended the progesterone converting hormones early enough, You can then begin what is basically HRT - hormone replacement therapy.
Start at 200 mg perferably test enathate
Week 2 100 mg test enathate
week 3 100 mg test enathate
week 4 50 mg test enathate
week 5 50 mg test enathate
week 6 nothing you are finished!
Small amounts of femara or arimidex can be used the first or second week, but after this you shouldn't need any as the testosterone you are using should be below your normal physiological weekly output, therfore the estrogen aromatized will not cause any further suppression, as it will continue to taper off, as you taper your hrt, allowing natural levels of testoterone production to slowly increase.
Over the course of the six weeks you will gradually regain full testicular size. There will be no need for hcg use which actually exasperates recovery, and there will not be an interuption in libido, or 'crash'. You can continue your workouts as per usual, without worrying about muscle loss due to being in a catabolic state.
You will loose some size, that is a given, but your recovery will be much smoother and the size you keep will be much more than any other method. You will retain your leaness, hardness and your vascularity. Basically you will continue to look and feel like a god.
Granted your libido will never be exactly the same as it was before you took your first heavy androgenic cycle, but that is the price you pay.
If you follow this protocol closely, you will find that it is much more advantageous than using the short cycle approach as you won't have to worry any longer about crashing that often occurs with longer cycles.
As a final note I must also add that this is much more healthier for you then using clomid and nolva long term which have some nasty sides. Testosterone is a natural occuring hormone in you body, and your body can not distinguish the difference between endogenously produced test, and exogenously injected test. When administered in subphysiological levels, it is considered hrt, not a steroid cycle, and the health risks are nominal.