Vitality

[Sarah]

The quality or state of being vital; the principle of life;vital force; animation; as, the vitality of eggs or vegetable seeds;the vitality of an enterprise.

[Sarah]

A word that describes one's growth, build up of energy, or in sexual reference, build up of white cream in your hot shaft.

[Raeanne Dimick]

energy and strength:

[Becky]

The state of being strong and active; energy.