It may appear to not be fattening but sometimes growth increases more in density instead of just expansive growth, and density is harder to spot than to see expansive growth. Its like getting more bottles of water and filling those bottles, the days you get more bottles you see the growth, the days you are filling them the number of bottles is the same but is still working towards the goal of collecting and filling water bottles, but also needs to gain density, orelse you get that airy bud that when squeezed turns into a paper leaf.