I'd imagine this whole "being strapped to a ton of explosives and using them to fly" moment is a tad bit more extreme and stressful than a submarine dive.
After that, they both have similar constant stress factors, but imho the launch alone is probably way more than what anybody on a submarine would go through.
After that, they both have similar constant stress factors, but imho the launch alone is probably way more than what anybody on a submarine would go through.