If sitting down for long periods is bad for us, then why is walking or standing up all day cause lower back pain?

Question

If sitting down for long periods is bad for us, then why is walking or standing up all day cause lower back pain?

In: Biology

Answer 1

Anecdotal I know but as someone who has had jobs that rely on either sitting all day or walking and standing all day, my lower back pain was far worse from sitting all day.

Feet is a different matter.