“Whether standing, or sitting, whether we are sick or working, walking or eating or whatever else we are doing, we must recite the prayer for as long as we are awake so that we even recite it in our sleep. To those who have made some progress, the mental prayer operates in their sleep. You must be attentive and keep trying. You must not give up in any way.”
(Elder Joseph of Vatopaidi+ on the Jesus Prayer)