Falling down

Having seen something similar myself when my uncle toppled over the side of a sleep incline and emerged unscathed at the bottom of the 20m fall, I can believe a report from the UK of a young sleepwalker who stepped out of a bedroom window and landed, on her feet, and unhurt, in the grass, 8 metres below. Some will put it down to the soft landing, others, including me, will think it has more to do with the person not knowing they were about to/falling - so they don't go "tense" and resist the impact. (Did I mention that my uncle was pretty much fully inebriated - and definitely feeling no pain - at the time of his fall.)