Chin-up
Muscles: Biceps, Back, Rear Delts, Core
Form tips
- Supinated grip (palms facing you), hands shoulder-width
- Hang with shoulders actively packed
- Pull until chin clears the bar — lead with elbows
- Lower fully under control
Common mistakes
- Using momentum or kipping
- Letting elbows flare out to the side
- Stopping short of full extension at the bottom