[musha68k]

Also timers; reminding to constantly switch up positioning. Standing, sitting (especially with legs up), now and then lie down position even (e.g. for when reading specs/documentation).

Switching chairs is another one for me. I do have a HAG Capisco at my fully ergonomic standing desk setup but also work from the couch or kitchen table in between.

But yes, exercise is the main pillar; and AFAIR ergonomics basically means no repetitive or same posture or movement over longer stretches of time; body wants to change position and move about.

Lastly, breaking habit of overwork if current work phase allows (always questioning if the case / if working efficiently).