anyone know how to relieve tension from the arms i manage to get it at the start but it is just the consistency of it that troubles me. I have been told to relax which I do bu then it just builds up in my picking arm, it is frustrating. Anyone help?

Slow down what you're doing, the only way to eliminate tension is to slow down and speed up very gradually.
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I generally play thru the tension i get in my forearms, then give them a shake after every song. I figure its like lifting weights, need to build up the strength and endurance of the muscles. Altho if its happening before the1 hourish mark of practicing, I do what the above suggested.