While the motion of bodies is an observable reality, rest is not. What's to say that true rest is impossible, and that motion is necessary for bodies?
Proof that the bodies that make up the world we see around us- the stars, the planets, the mountains, the trees, the animals- are all emergent.
If an essence can cease to exist, then this essence must have emerged into existence. This is because the existence of this essence can be neither necessary, nor impossible. Which means its existence must be contingent. And all contingent essences are emergent.