Akasa (or Akasha) is a Sanskrit word that describes Infinite Space or Aether – The Fifth Element (the other four being Fire, Water, Earth and Air)
It is said to be the stuff where Gods and Celestial Beings are made, it is immortal, indivisable and indestructable. The other four elements can be affected by each other; But Akasa is the purest of them all and supersedes the other four in being incorruptible.
Consider it like a kind of enlightenment in fitness terms. Fitness, health and wellbeing are about balance in all areas of your lifestyle.
Fire = Motivation and Will, Water = Adaptability to Change, Earth = Endurance and Stability, Air = Peace and Freedom
By observing all four elements, one will become more rounded and therefore, maintain a healthy lifestyle. Think of the four elements as an easy guide to understand the virtues needed to maintain a training regime.
Akasa is your goal, your pledge, your target. The Four Elements are how you get there.
Read more about The Four Elements