It's based on experience. Besides, when is the last time you came across your doctor on the trail. Okay, that doesn t travel very well. I m not a big fan of oily trail mixes. First of all The thought of anything containing chocolate makes me wanna hurl while hiking.
Nuts are mighty tasty.
However, if you eat too much you ll wind up with a case of the squirts. My best advice to date is kind of like my mother used to say when I was sick. Eat what sounds best at the time. You re body knows. So take a mixture of items until you figure it out.