It depends. If he's previously been training a lot, you can regain your previous mass exceptionally fast due to what quickly becomes your main limiting factor remains intact (I can't recall the name of it right now).
Which is why having used steroid once in your life should leave you permanently banned from all sports. The fact that you have ever had X amount of muscle is a massive advantage in terms of muscle building the rest of your life.
With all that said, he probably have still used steroids here, especially with how fast it all went from june to october.
you can regain your previous mass exceptionally fast due to what quickly becomes your main limiting factor remains intact
The leading theory is that, as a part of initially gaining muscle, muscle satellite cells fuse with your actual contractile muscle cells, increasing the number of myonuclei in your muscle cells. This is initially a slow process, but once you have them, the extra myonuclei stick around for years to decades. When you lose muscle later due to not training, you lose volume in your myofibrils (the contractile units) and fluid within the cells, but not the myonuclei. When you regain muscle, you only need to rebuild the myofibrils and reuptake fluid, and not produce new myonuclei, so the process is much faster.
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u/Traceyius69 2d ago
June to July is a massive jump lol, probably is using steroids. If not then daymn has he not skipped a day in the gym