The Exercise A Little Control chapter in Keifer's Carb Backloading book is fascinating. It corroborates something I've known about myself for YEARS; I am basically insulin resistant, which is why I can neither get fat nor muscular, as both require insulin sensitively to happen.
I've always been this way from birth, probably borderline type ii diabetic. I also have always been ravishingly hungry and skinny since birth; starving, two hrs after ANY size meal.
The catch? The starving feeling was because, due to my insulin resistance, my body was not getting the energy I was putting into my mouth. The starving feeling was always MUCH more pronounced on days I was sedentary. Whenever I would exercise, whether endurance or lifting, I could eat, and be satisfied without getting that feeling of starving hunger for the remainder of the day!
It never made sense why before, but I recognized on a base level years before I began to diet research that when I exercised, even though to my understanding the exertion should have made me MORE hungry, it in fact made me LESS hungry!
After reading this chapter, I see why! I don't gain fat or muscle really because I'm insulin resistant period. But, exercise causes non insulin mediated glucose uptake; exercise causes the GLUT to relocate to the surface of the muscle cells and take up sugar from the blood without needing insulin to initiate the process as normal, before insulin is even released by the pancreas!
So exercise works for glucose uptake for even the completely insulin insensitive person....me! Glucose actually goes into my starved muscles when I exercise and eat; so I don't feel starved that day afterwards.
On rest days, I felt starved because the cells never got fed, as there was no exercise induced glucose uptake, and the insulin trigger for GLUT mobilization/cell surface relocation is broken in me, the insulin resistant.
I also knew long ago that carbs always made me feel terrible unless I exercised first! This totally is explained by the same situation above. And, while carbs made me feel terrible in non exercise times because of my insulin resistant body's inability to clear my blood sugar (without exercise to bypass the need for insulin), I had never gone fully ketogenic for long enough to adapt to clean and efficient fat burning, so eating only meat and fat made me feel starved too, just not shitty in addition as it didn't jack my blood sugar!
Makes total sense now. Since I went keto for 5 months I got better at / adapted to burning fat for energy, which resolved the starved condition making me believe i had to eat a meal every 2-3hrs! Keto allowed me to try, and enjoy intermittent fasting. Ive eaten 2 meals a day at 12:00 and 7:00 ever since.
And Leangains reminded me that STRICTLY eating carbs only on exercise days and AFTER training was the only way for me to tolerate carbs bloodsugar-wise, as well as the only way for my muscles to absorb the sugars because of the non insulin mediated glucose transport mechanism! I understood that it worked for me but not why, until now, after reading Keifer's research!
It's all coming together now!
What do you all think? Also, I wonder if this non-insulin mediated glucose uptake in muscle cells initiated by resistance training is shut down by taking antioxidants?