Muscle-Up

The pinnacle CrossFit gymnastics skill: pull yourself up to a bar (or rings), then transition OVER it and press to a locked-out support on top — a pull-up and a dip joined by a tricky turnover. The transition is the hard part, and pulling unevenly (the 'chicken wing') is a real shoulder-injury risk.

FilmableFilm this on your phone and TrueForm measures your body mechanics and tells you what to fix. You get angles, not a made-up score.