Elbows lifting off the pad
Keep the backs of your arms pressed into the pad; if they lift, the weight is too heavy.
Isolation · Machine
Machine Preacher Curl
The machine preacher curl braces your upper arms on an angled pad while you curl handles along a guided path. Because you cannot swing, it isolates the biceps well and loads them hard near the stretched bottom position, making it a good choice for arm growth at any level.
- Primary
- Biceps
- Starting rep range
- 10–15 reps
- Target effort
- 1 reps in reserve
- Progression
- 2.5 kg / one stack step
Muscles worked
The biceps bend the elbow, with the brachialis assisting strongly. The pad holds the upper arm in front of the body, which removes shoulder involvement and makes the bottom of the rep the hardest part.
How to set up
- Adjust the seat so your armpits sit snug against the top of the pad.
- Lay the backs of your upper arms flat on the pad with elbows lined up with the machine's pivot.
- Grip the handles palms up, wrists straight.
- Sit tall with your chest close to the pad.
How to do each rep
- Curl the handles up until your forearms are near vertical, squeezing the biceps.
- Keep your upper arms and elbows in contact with the pad throughout.
- Lower over 2-3 seconds until your elbows are almost straight.
- Reverse smoothly at the bottom without bouncing out of the stretch.
Common machine preacher curl mistakes
Skipping the bottom of the rep
Lower until your arms are nearly straight, because the stretched position is where this exercise is most useful.
Seat too low
Raise the seat so your armpits reach the top of the pad and your elbows match the pivot.
Sets, reps, and progression
Surpass starts the machine preacher curl at 10–15 reps with about 1 reps in reserve. As an isolation exercise it fits well after your main compound lifts.
Work in 8-15 reps and add the smallest increment once every set reaches the top. If you plateau, slow the lowering phase before adding more load.
Know what to lift next time
Surpass shows what you lifted last time beside a target for this set, and adjusts it from your reps and RIR. Free on iPhone, no account needed.
Machine Preacher Curl alternatives
These train the same main muscles. Swap when the equipment is busy, something hurts, or progress has stalled for several weeks.
Questions
Are machine preacher curls good for biceps?
Yes. They isolate the biceps, prevent cheating, and load the muscle in its stretched position, which makes them a reliable growth exercise.
Preacher curl vs standing curl: which is better?
Preacher curls emphasize the bottom of the range and limit body swing; standing curls allow heavier loads and challenge the top more. Using both across a program covers the whole range.