Woke up one day when I was 10, I had absolutely no fucking feeling in my legs. I couldn't move them, I couldn't feel them. They didn't even "feel" numb, it's like my legs had been replaced with plastic ornaments. I started crawling to the living room where my dad was watching TV. He set up a hot bathtub and told me to sit there for 10 minutes, it worked.
Wasn't really painful, but was weird to have my legs like that for like half an hour.
Also, I get these occasionally, once or twice every few months. I wake up, eyes open, but I can't move my body. I can move nothing, I can hardly breath. I start panicking and trying to get up but my body won't move. It's not "painful" but it scares the fucking shit out of me every time, I start suffocating, but then it goes away after about half a minute or something.