>Working over 55 hours a week associated with higher risk of stroke, heart attack on correlation vs. causation - may it be that the anxious, self-insecure, etc

>Working over 55 hours a week associated with higher risk of stroke, heart attack on correlation vs. causation - may it be that the anxious, self-insecure, etc. people, ie. the people who manage stress badly, are more prone to those health issues as well as to those long stressful work hours? For example anxiety - one of the source for it is bad oxygenation which in turn may result from the bad sitting posture (which makes harder for lungs and heart to perform their natural movements). As result your mental performance drops with corresponding work results. As a parallel result your heart works harder trying to push the blood, and the blood pressure rises, and your brain blood vessels are trying to expand and become more penetrable (i.e. the walls expand and get thinner) in order to get the enough oxygen to the brain tissue. This happening regularly naturally makes the foundation for the stroke and heart issues.