Hi Rhonda (Happy birthday, by the way!)
I haven't noticed my legs being lighter in weight, but my reflexes are definitely hyperactive. My husband can walk by while I'm sitting with my feet up in my recliner and just brush the bottom of my foot and my leg jerks so hard that I almost knock myself over.
And sometimes when I'm standing still, it feels like I'm bouncing (I think that's from my constant tremor/vibration though.)