In. Diet , sleep, naps plays a crucial role here along with the natural anabolic s which you have vast knowledge of.
I always take two weeks off(sometimes up to a month) on pct either light training or none at all. why a lot of injuries happen in PCT in my opinion is testosterone(and estrogen) levels are low and that makes it easier to get an injury when training super hard to try and keep them cycle gains.
With a four week cycle you most likely will bounce back in four weeks. to be real sure you can always get blood work after pct to see where your free/total test levels fall, and everything else falls. Goodluck in PCT my friend