[MightySunTzu]

Originally Posted by MightySunTzu

One fast i worked a hard 8/40 and i was on my feet the whole time. I would much rather have been doing something more relaxing, but i had to do what i had to do. i notice that my upper back gets very tired very easily. I believe it's because the muscle glycogen is gone and the glycogen took 4x its weight in water with it. A faster's muscles are not their normal pumped up selves.

I recently learned that once we enter into ketosis, our glycogen stores are refilled, both in our liver and in our muscles. So i was mistaken about this . Haha, much yet to learn. My new theory is that the blood/toxin level is temporarily heightened as these toxins are in the process of being eliminated and this is what leads to being more easily fatigued. Actually i always believed that to be part of it and i'm pretty sure that is supported in the literature.