are you doing the same workout routine each time on a muscle. Change your routine, add different exercises, even on juice you can get sore. Try it, for example, on your chest day try doing different things, after you are done bench pressing for the day, do 4 sets of pushups, as many as you can before you hit the floor, then tell me you don't have an awesome pump, and you aren't sore the next day from changing exercises for that muscle, I will be shocked, and so will your muscle(shocked). Thats the key to growing, keep shocking the muscle over and over again. The muscle gets bored over the same thing over and over again and says been there,done that, and won't grow. Thats why each workout you must increase the weight to grow, or hit the muscle differently, try this and let me know how things go, this is how I beat my stuck points with ease. I notice the more sore I am the better the results for me, so this is how I know to change my routine, I'm not sore at all the next day or 2. later