thin stems?

hey ya'll need abit of help again.
The stems on my plants are kinda thin, well at least they look thin to me.
I've got one of those computer fans blowin at them but it seems like they bend over after awhile. 7 days into veg. Any way to thicken the stems? (if there is a need to). Thanks guys!

you could stake it into the ground and then put a more powerfull fan on it a 9" desk fan will be perfect also what lights are you using it may just be that your lights are too high or they arent powerfull enough

i've heard of people cutting a line in a plastic straw, and then covering the stem with it. you could also raise the soil.