Replying to
@Larvitz@burningboard.net I might add one more useful website for DB travellers: https://strecken-info.de/
Ther you can see the official reasons for a blockage and perhaps even route FAR around it.
Another thing I always use on train: A self-inlfatable cushion - only half way filled. That simulates "dynamic seating" and helps my lower back quite substantially,
Btw: I am a long distances commuter (one way 800km) for the last 14 years quite across the country....
Thanks for your insights!