Hi all, I have been having some problems with my drumming lately. It seems like for a couple months now I can't get any faster or any more endurance with my feet for double bass. I play daily just fucking around playing to tunes usually for about 30 min to an hour, don't really sit there and play to a metronome often...even though I know I should. Comfortably, I'm topping out around 125bpm 16th notes cleanly, but I get tired within 1 minute and can't keep it up. Last month or so I have been playing the single kicks with my left foot to try and bring it up to par with my right leg, may have helped a little but not much. Oh, and I play heel-up. Anyone have some wisdom for me to help me out? Thanks a lot!