The German dude has been up in space before. Must be a bug or he closed a hatch on his hand or something.
I bet it’s motion sickness. Can happen to veterans. You never know.
Well, the last time he was up in space was 15 years ago. In other words, not recently.
Please note - the guy is 56 years old.
I’m 58, and exceptionally fit, and I can tell you that a whole lot of things do start to go wrong with your body when you repeatedly stress it after 50.