However the longest escalator on any metro system, which is in fact made up of two escalators one above the other, is situated at the Wheaton Street Station on the Washington D.C Subway in the U.S.A, The two escalators are both seventy meters long, have a vertical rise of thirty meters and take three minutes to ride.
If the blood pressure is too low 80/40 the pressure is usually considered too low to exercise. Exercise dilates the arteries and after exercise the pressure will be lower than entry. If lower than 80/40 most people will feel like they might pass out.Blood pressure is measured during exercise.f the blood pressure is too low 80/40 the pressure is usually considered too low to exercise. Exercise dilates the arteries and after exercise the pressure will be lower than entry. If lower than 80/40 most people will feel like they might pass out. Blood pressure is measured during exercise.
What a blood pressure reading of 80/50 means. Readings at or below 90/60 usually indicate low blood pressure, or what's called HYPOTENSION, meaning the pressure in your arteries is at the lower end of what's considered normal.hat a blood pressure reading of 80/50 means. Readings at or below 90/60 usually indicate low blood pressure, or what's called HYPOTENSION, meaning the pressure in your arteries is at the lower end of what's considered normal.