So I have been playing the bass for the past two years and i've noticed something about my playing and want to see if others experience this aswell. It seems that my playing goes through an almost rollercoaster effect over time. Some days I'll play really well, speed will come easy, and my tone is right where I want it to be. Other days i'll be playing below this. I won't be abe to play certain fast or tricky songs like I was able to, or my tone will be off, or I'll get tired quickly. I use a consistent form and play for at least an hour a day, sometimes upwards to 2-3 but I just get really down when I go through the days where I play like poop because I know I can do better. I currently don't do any warmup exercises which may be a problem. Is there anything I can do to even out my playing?