USGrant1962
Thinks s/he gets paid by the post
I know I will probably jinx myself but in 4 million+ miles I have never experienced turbulence to the level of injuries. I've flown in extreme turbulence before but I'm fortunate I don't get motion sickness so that is one advantage I had over those who do.
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I'm maybe 1 million miles but spread across airlines so hard to calculate. Interestingly, my very first airplane flight was probably the worst whole-flight turbulence of all ~1,000 flights. I was about 26, on my first flight ever going to Jamaica on vacay. The seatbelt light never went off for what I would now call medium turbulence - but it was for the whole flight from BWI (I think) to Jamaica. Huge cheers and clapping when we landed. I thought that was normal!
1,000 flights later and I've never had anything like that. I did have two sudden turbulence incidents where the plane dropped hundreds of feet at altitude, coffee cups flew up, overhead bins popped open, and people screamed. In one case someone passed out and we did an emergency landing in Omaha. The person seemed OK on the stretcher out of the plane. But in no case was the plane in any actual danger.
Anyway, to OP's problem. Some people I know take Ambien for anxiety and sleep on planes. Maybe that is an option.