The diastolic blood pressure number or the bottom number indicates the pressure in the arteries when the heart rests between beats. This is the time when the heart fills with blood and receives oxygen. A normal diastolic blood pressure number is less than 80. A diastolic blood pressure between 80 and 89 indicates prehypertension.
Aang used airbending to handle an airball. Airball was a ball game played by the Air Nomads atop a court of towering wooden poles. In the game, which could be played with a minimum of two participants, the players would use their airbending to cause a hollow ball to ricochet among the poles and enter the goal on the other side of the court.
Ball Lightning: http://en.wikipedia.org/wiki/Bal... : Ball lightning is an unexplained atmospheric electrical phenomenon. The term refers to reports of luminous, usually spherical objects which vary from pea-sized to several meters in diameter. It is usually associated with thunderstorms, but lasts considerably longer than the split-second flash of a lightning bolt.