Any oil can stretch the fascia but the average AAS user would not do enough to warrant this. Generally it would take an excess of 21 ccs of oil per body part per week for the fascia to be stretched enough for long term growth.

In all likeliness what you are experiencing are temporary swelling from the oil. You put 2 ccs in the bicep it will give a slight balloon effect for a week or so, even 1 cc might b noticeable but this is not true muscle building, just an illusion. Your muscle came back quickly due to muscle memory (as someone below already suggested)

site injections that help localized muscle growth. Naw not really. Now can it help with fascia stretching? Sure , is it some great miraculous gains? Not particularly. An if done right it will be painful and definitely isn't for the weak hearted or novice user. Ever pinned your inner and outer calves? I have , no fun.... Same with traps , hams and forearms. The thing with fascia stretching is for example, lets say I do triceps I pin my tris an hour or so before the gym and then hit them in the gym extremely hard with a ton of volume , like the tricep is going to tare off the bone. You only get fascia stretching properties from shit if you pound on it soon after and at best your still not going to get the gains your thinking that you'll get. I also get deep tissue massages for fascia stretching properties also as its proven the fascia will limit muscle growth and its proven that breaking the tissue down via deep tissue helps. My tris used to be a weak point but the people who have seen my side tri shot know they are far from weak anymore.. Do I owe it site injections lol no I owe it to everything I do from the work and different exercises and training style in the gym, my diet, my trips to the massage therapy , the chiropractor , etc etc etc everything combined helped me not just one thing.

Now with what your describing , a pinched nerve can really limit growth. Did you get that fixed? Now what flash is talking about would work out better for you. Also a lot of isolateral movements is what you need to be doing. Getting proportional means you don't look at things as chest day its more of pec day because you need to isolate each pec to bring one up to the side you've been favoring. Same with your arms. Work out the lagging muscle harder with more volume aka reps than you do the stronger side, work at it and measure your progress. Focus on the contraction and the range of motion and the pump and youll be good in no time.

igf1 lr3 makes spot injecting the muscle grow if used correctly, spot injecting aas into muscle for growth is false.

inflammation at best.

There's an element of fascia stretching for sure. In terms of site injections, look at it this way. If it worked, my arse would be the size of an elephants after all of the glute injections followed by squats / leg presses for the last 25 years

Ultimately your weak side is catching up. Doesn't matter if it's in your head or scientifically correct, it's working for you!

Well in this case it's probably mostly your muscle memory helping you out. However the spot injections can help give you temporary inflammation which can make you look larger. And then eventually your body will make some scar tissue in response to the repeated tissue injury. This can make your muscles appear permanently larger without it actually being muscle. A prime example is the current flex wheeler. You can see his biceps and triceps look misshapen from all his site enhancement earlier in his career

Just muscle memory. Lagging groups caught up with the rest. You get some scar tissue but the muscle won't grow directly from being injected.

This idea has been around since steroids were basically invented and it's been definitively proven that it doesn't work. You may get some fascia stretch, but that's all.

I would have a big ass and my quads and delts would look pretty funky too if that was the case. I think your weak body parts are just catching up, they would be growing and catching up them same no matter where you pinned.