Grouse Grind Experience

During the Grouse Grind my body was exposed to all sorts of feelings. I was well beyond my final zone when I arrived at the top. Throughout the grind I experienced that my leg muscles were tiring a lot due to the steepness of the mountain, and that I began to breathe very heavily but I did not feel like I was out of breath or running out of energy. The climb was tough nonetheless it required a lot of power and strength, which to succeed needed to come from your mind because that was the one thing I felt could have stopped me but failed to do so. During the climb I realized that when i kept a steady pace it helped my body to cope with the climb and did not make me want to stop and any point or slow down, but when I started to speed or go faster I felt my body shutting down on me and in a way telling me to keep a specific pace going, and when I did do so it assisted me in time and shortened the breaks. Judging from my experience doing the Grouse Grind the energy system my body was using was the anaerobic glycolysis, because while I was changing speeds I felt that I could only continue for 30 seconds - 2 minutes and it decreased my function, but during my regular movement I experienced the aerobic energy system as my body was enduring a lot while my heart rate was increasing and cellular respiration was present.