I lift what you call "legs" I just call them usless thingies. I try and life one and I fall down. I just tell myself there's no place like home and go lay down again.
Try lifting them with your hands while sitting first?after you do it successfully 100 times, only then try it standing. Also, wear a helmet for safety?
I tried that but I can't seem to lift them without falling I lifted them with my hands like you said honest! ?