I have read that when new starts are around 2" to 3" tall that you should exercise the stems by bending them back and forth for thick stem growth. I would think that using a fan would accomplish the same results. Anyone ever tried this tech.
fans do help keep the plant strong at the base. i would recommend a fan on 24/7 during all phases of growing.
i even 'exercise' the plants stems before flowing. making them stronger and more capable of holding the huge nugs.