If you are finding it hard to deal with the pressure at the workplace, there is more reason to worry. New research has found that work stress and impaired sleep are linked to a threefold higher risk of cardiovascular death in employees with hypertension.

"Sleep should be a time for recreation, unwinding, and restoring energy levels. If you have stress at work, sleep helps you recover," said study author Karl-Heinz Ladwig, Professor at Technical University of Munich, Germany.