just get a nice good breese going on them (any fan that dont blow the plant over) and you can roughen them up a little by bending the stems (i would not pinch the stems at that stage) because it might result in the plant not recovering as it is in a weak stage "vegging".. when it grows up a little bit then is the time to pinch the stems to make it grow stronger.. there might be a couple other techniques to makeing the plant stronger that i havent listed:jointsmile:thats going to be a sick grow !