As I am typing this post my upper forearms and biceps are aching. Its been happening for the last few days now. It is due to pumps from the earlier session (I worked back). I did not have a good workout as the pain was beginning to slow me down alot. I had to take long breaks and even then the pain barely subsided. I have done some searching on the forum and found that increasing water intake can help. I am in week 4 of a 13 weeker: eq600/wk, test e 600/wk, and d-bol 40mgs/day (wk1-4). I am worried that this may really become a problem...help. Which compound is making this pain occur and there must be someway to have this not take away from my workouts...thanks fellas.