The most important thing about changing your body is total calories in vs total calories out, there is no way around that. This is the most important thing, not the ONLY thing. Secondly, the macronutrient breakdown of those calories will determine what kind of weight is coming on or off of your body. Finally, every other factor such as meal timing and even calories burned from working out come into play and are much much less important. If you eat junk, you will be a hungry person on this kind of nutrition strategy. You will also most likely gain fat more quickly.