I don't understand why its recommended to take varying amounts of calories and protien on lifting days and resting days. If I'm trying to gain muscle for instance and I train in the evening... the excess calories and protein that I take in the morning and afternoon don't seem as vital to the protien/calories that I take the next morning on my "rest" day. It seems like it takes 24-48 hours (and maybe more) to recover from a heavy lifting day, and during the rest day, your muscles would need the protien for repair.
Can someone correct me if I have this wrong? I tend to keep the protien and calories mostly the same day to day, but I consume more after my workout on workout days where it might be more evenly spread on rest days.