A jug is a big, deep hold you can wrap your whole hand around [102]. The skill is to hang on it cheaply.
Grade You use jugs from your first session. When you pause on one on a steep wall, hang on a straight arm, and on a vertical wall stand tall (this book’s suggestion). Resting that way before the hard moves starts to matter around V2–V3.
How to do it
Put your fingers into the deepest part, up to the second joint.
On a big incut jug, wrap your thumb round the front. It takes load off the fingers [167].