When you climb a hard route, the crux sequence will often replay in your head for days after the effort. The replays can be so vivid that your limbs flex and tense in tune to the memory. Quickly get comfortable on bad right undercling and bicycle right foot, left, then right onto the ledge. It's really bad when you find yourself reaching for an absent chalk bag at your waist.
Since I usually pick routes I have a good chance of climbing "onsight," or first-try, the hard sections are short and manageable relative to my ability. Drop hips, rock over and sit on right heel, maintain balance with two fingers on the pencil-width crimp to the right. So the replays that echo in mind are usually short.

We chose a four star route called Jesus and Tequila, rated 5.12b, which the guide says requires all of the tricks in the book. Go, no stopping. You start by stepping onto the wall from a 10' boulder, then launch into powerful, overhanging moves on an arete, a technical and devious face through the crux, and then some long throws to a final roof crux. Match left hand to pencil-width crimp, cross left foot over right on ledge.
We spent hours on Saturday wrestling our way to reach the cruxes of the route. Lean right and catch gaston with thumb. Then we spent hours experimenting with different formulas to get through them, finding answers to the last problems just as darkness fell. Peek down and place pointed right toe on low edge.