What is recommended way to stop ragdoll physics?

I have the common problem where sometimes a ragdoll never truly stops moving, as in the physics skeleton keeps pushing itself around ever so slightly.

What is the recommended way to stop it?

I am using NxOgre0.9 with PhysX2.7.3 and Scythe Physics Editor for my ragdoll.

Thank you dearly!!!
-OM

Damping, Sleep Angular/Linear Velocity, Substeps.

Any one of them. I recommend sleep.