Well you didn't cite any sources but even if true, it doesn't sound too bad. Literally everybody has experienced shortness of breath in their lifetime, you just have to run or go to the gym while being out of shape and you'll experience it. It's nothing special and also not painful at all. About the abdominal pain part, yes it sucks and can be painfu, but it's also not too bad. Going through abdominal pain and shortness of breath for 20 minutes is nothing like what I've had to experience for the past year. The covid "vaccine" gave me nerve pain, POTS, and severe insomnia and I've been suffering for a year now (was perfectly healthy before that). I literally have shortness of breath by just going to the toilet due to POTS and while I don't have abdominal pain, my feet are burning 24/7. This whole post sounds like a bad pro lifer attempt. I'm not an expert, but from everything I've seen SN is one of the best methods out there. The vast majority of eye witness reports report it as peaceful.