Oh, yes, the dreaded falling and hitting sensation with that jerk awake - glad I don't get them anymore. When I did, I looked them up and the best advice was to avoid stimulants (sugar, alcohol, caffeine) close to bedtime (timing depends on your metabolism - I had to quit before 4pm) and to try taking a taurine mid-day. That and doing a bit a meditation just before sleep helped. BTW it is estimated that 60-70% of people get them so it is not unusual unless they are constantly disturbing you and causing sleep deprivation. They don't even wake up a lot of people - they did me, but I've seen others in my family have them and remain asleep. So even though they woke me when I was irritated with pnhe most probably I've always had them and they just never bothered me much.