Serious advice here. Including:

Sitting too long and holding your breath the entire time

According to all recent findings, sitting in one place too long can lead to hypertension, blood clots, and heart disease, while holding your breath for an extended period of time reduces the flow of oxygen to your brain and slowly shuts down your circulatory system. Avoid this by standing up every few hours at work and occasionally breathing.

8 Ways Your Ordinary Office Job Is Slowly Killing… (no author listed) ClickHole (22 June 2015)

Read the full piece.