Time's maw devours all things.  But as a dedicated monk, Kawheek mastered the Timeless Body ability.  He continues to age visibly, but he maintains a youthful level of strength and vigor to go with it, similar to Yoda in Star Wars.  He will still die eventually, but he will not become infirm or weakened with age before the final curtain falls.

I decided to get a picture of Kawheek later in life, for support in an RP scene, and just for fun.