World Hypertension Day (WHD) is celebrated every year on 17th of May in order to spread awareness about the negative impacts of high blood pressure. This celebration of this day was first initiated by the World Hypertension League (WHL) back in 2005 on 14th May. But in 2006 WHL decided to officially declare 17th May as the annual occurrence of World Hypertension Day. Like every year the World Hypertension League has come up with a theme for WHD this year as well: ‘Know your numbers'. Hypertension is a condition where the blood pressure in your arteries goes