I'm 5'6" and 135lbs and have flown on a lot of 13+ hour flights. Frankly, I'm surprised that it's even legal to make airline coach seats current size, because

I'm 5'6" and 135lbs and have flown on a lot of 13+ hour flights. Frankly, I'm surprised that it's even legal to make airline coach seats current size, because it barely fits me. After 9 hours, I'm usually ready to stab myself.