For a few months now I have been having bad problems with my recovery time from a workout. I will work a muscle group and be sore for like 4 days, two or three of which are a pretty intense soreness. I am not really sure what the root cause of this could be. It is not an issue of over-training because last week I went into the gym not feeling 100% so I kept my workout for chest pretty easy and simple compared to normal. On flat bench I did 135 x 15 for two sets. Then I did 225 and pyramided down for reps of 15, 12, 10, 8, 6. I followed this up with 3 light sets of db incline press and 3 sets cable crosses. I was afraid I wouldn't be sore at all and I ended up being sore for 4-5 fucking days! My diet is solid, I take a multi, I take mono creatine, and I take whey. After my workout I head home and get protein in my system 30min after my workout (sometimes 45min) and then another 45min after that I eat pretty large meal with plenty of protein and carbs. What could be the cause of this extended soreness? It's really starting to interfere with my workouts because it's hard to do other muscle groups when your back or chest stays sore for 5 days. For the record, I have tried glutamine and it didn't do much if I recall.