- Exercise!

In my home office, I've got pushup stands, a pull-up bar, suspension straps, an ab roller, yoga mat, resistance bands, and some dumbells that I use in those moments while something is compiling. No back pain for years and I'm in great shape.

If I did this in an office, I'd get endless remarks and cocked eyes, eventually being told by a superior that my "coworkers find that a little weird". (i.e. stop doing that)