Your body is insulin sensitive. It is also sensitive to the stimulus received around exercise. You should NOT eat the same thing around EVERY meal. That wouldn't make any sense at all. (you can edit posts after you have posted 50 times) You need to have high GI carbs around exercise....the rest of your meals will be better off if they're balanced. Nutrient timing is very important.
EDIT: I don't know where I was going with this paragraph...so I deleted it.
You should NOT be having peanut butter in a shake around your workout. That fat will slow the digestion of your protein & carbs at a bad time.
