Six years back even i had the same question “How long does it take to fix muscle imbalance ?” i asked to my personal trainer and he had no answer and he said it may take years to fix. He advised me to have higher reps on weaker side compared to stronger, But it didn’t work in fact i had no growth in my muscles and the muscles imbalance was not fixing. so i decided to do in depth study on muscle imbalance and finally i decoded the science behind the muscle imbalance. Muscle imbalance looks very difficult to fix in less time for example within a month, but the truth is that its more easier to fix once you identify the weak and strong muscles throughtout your body, you can easily fix. If you have uneven chest muscles, its not only chest you have muscle imbalances but throughtout your body, but normally we try to correct only chest muscles which will not correct muscle imbalances but increases the imbalances. So understanding how to correct is more important.
So how long does it take to fix muscle imbalance or posture ? within a month ?
Yes it is possible to fix muscle imbalance within a month. You just cannot fix muscle imbalance by doing higher reps on weaker side instead you need identify the weak and strong muscles. you have to do lot of stretching and strengthening exercises. You can check my article on how to fix uneven pecs to have an idea to correct your muscle imbalance or else you can check my book Human bio-mechanics optimization which is available on amazon in all the market. It is written in laymens terms so that anbody can understand and also the price is very less in future the price may increase as i will be updating the book consistently. Once you understand the science behind the muscle imbalance you will be able to correct muscle imbalance and you will start getting results from day one.
Hope you find the video useful and with new information addition