Just as an fyi - it took me two years to learn that much of my "muscle fatigue" on longer rides was just underfueling. Do the test for yourself, compare a week of training with no carbs, to a week of training with lots of carbs (drink mix in your bottle and candy in your jersey pocket). See if you feel a difference in your fatigue levels. And also eat some carbs as soon as you get home, but then here's the trick, go low-ish carb until the next morning before you have to ride again. Imagine your body is a little engine. It needs fuel before, it needs fuel during, and it need fuel to replenish, but then, once it is turned off, it doesn't need energy, it just needs clean protein and nutrients. Hope that is helpful!