Alright, when you sleep... you grow
when you have no amino acids in yur system you become catabolic
when you become catabolic when your muscles are healing/growing... it will hinder your gains
take a mix of 3 proteins before bed. THe more you take (don't exceed 60g), the longer lasting proteins you take, the less you will be catabolic. I used to wake up in the middle of the night to "refuel" as to avoid becoming catabolic
I recommend taking a whey/egg album/ milk casiente shake with either some nat pb of some flax right before you go to bed. Like breakfast and your postworkout meal, it's one of the most important meals of the day (although, to me, every meal is Damn important)