Ergonomics
When contributing to an open-source project, like other computing activities, the main risks are:
- muscle and skeleton impact
- mental health impact
- eyes impact
Workstation ergonomics
The first important point is the workstation ergonomics. You need to sit in a correct position, with correct placement of what surrounds you.
The NIH Office of Research Services maintains for their own use a comprehensive checklist of the points to check.
INRS also maintain such a risks list in French, with nice illustrations.
Mental health
Frequent pauses are needed, 5 minutes par hour, to gain concentration back.
Research hints open-source maintainers are at risk for burnout. Some guides try to address this topic, for example https://opensource.guide/maintaining-balance-for-open-source-maintainers/
Eyes
When doing a pause, look far away from your screen (regarder au loin).
Consider to use blue light filter (software or screen hardware) after sunset.
