Preacher curl: how to do it
Main muscles: Biceps. Helpers: Brachialis, Forearm flexors. Below: step-by-step form, common mistakes, a muscle map, reps and rest, and what to swap it for.
Equipment
Barbell
Reps
10–15
Rest
75 s
Muscle group
Arms
How to do it
- Armpits on the pad, upper arms pressed down, grip at shoulder width.
- Lower the bar to almost straight arms, but without a sudden drop at the bottom.
- Curl up to the point where the biceps still holds tension.
Common mistakes
Upper arms lifting off the pad, jerking out of the bottom.
Muscles worked
primary·secondary
- Primary
- Biceps
- Secondary
- Brachialis, Forearm flexors
A secondary muscle gets roughly half the stimulus of a set — that is also how the log’s stats count it.
Alternatives: similar exercises
Log your sets — the app suggests the next weight
GymAssist tracks the load on each of 40 muscles, paints it on a body map and uses double progression to tell you when to add weight.
Free forever for the first 500