According to the American Heart Association, you can get an accurate blood pressure reading by doing the following: Don't smoke, exercise, drink caffeinated beverages or alcohol within 30 minutes of the reading.
1 In the same television series Joel Nestler played the teenage aged version of Clark Kent.  Superman (1948) and Atom Man vs. Superman (1950) were the first television series made starring the comic book character Superman. Kirk Alyn played the super hero in both these productions.
Clark Kent, one of the last of an extinguished race disguised as an unremarkable human, is forced to reveal his identity when Earth is invaded by an army of survivors who threaten to bring the planet to the brink of destruction.