Building your muscle in order to become stronger, healthier, and also more attractive is never a wrong choice. However, some people may find out that the training can be too hard and too long for them to handle, especially for those who don't consume the recommended supplements like the one at http://musclesupplementtrials.com/look-alpha-x-boost-supplement/ that you can check as soon as possible.
The first reason will be the problem with the DOMS. The Delayed Onset Muscle Soreness is not a joke at all. It can be quite painful, especially for those who don't use any kind of training. So that's why you need the proper ways to handle this problem such as taking the proper warm-up before the exercise, getting some massage treatment, and also the proper amount of rest. More importantly, having a mindset like "no pain no gain" is an absolute necessity for those who want to have strong muscles.
Another problem may lie within their own genes. Not everybody has the luxury of having a body which adapts to the training quickly. Some people may find out that their body changes too slow compared to others. So if you have the same problem, perhaps the right methods and supplements will be able to help you out.