Hi all. Any suggestions how to increase my picking stamina? I play death metal and after two or three songs my right wrist and forearm are so tired that its impossible to maintain picking rythm with my fellow guitarist and my playing gets sloppy and noisy. If i use only very light palm-mute i don’t tire that easily, but its necessary to really lay my palm on the strings to get an aggressive sound. Should i build my forearm muscles or do i just pick the wrong way? Know any good excercises?