I tried it last night just before going to sleep (I was actually intending to try a VILD, but couldn't keep my mind focussed). It was something I couldn't even begin to imagine it would be like. I first started to get the tingliness in my feet, which in itself was like having them being massaged or in a footspa. Then came the rocking motion, almost as though I was on a water bed being gently pushed back and forth. Though my eyelids flicked open for a moment and I saw a big black shape, I panicked and pulled myself out of it. Turns out the black shape was actually my second blanket I'd kicked off that had bunched up between myself and the wall.

Does HI usually come around this time assuming I don't wake myself up?