天台四教儀 1.70

1.70

第四、調五事。謂調心不沈不浮，調身不緩不急，調息不澁不滑，調眠不節不恣，調食不饑不飽。

Fourth is regulating the five matters: namely, regulating the mind so it is neither sinking nor floating, regulating the body so it is neither slack nor tense, regulating the breath so it is neither rough nor slippery, regulating sleep so it is neither overly restrained nor indulged, and regulating food so one is neither hungry nor overly full.