Low Cable Triceps Extension
The low cable triceps extension has you stand with your back to a low pulley, hands overhead holding a rope or bar attachment, and extend your elbows to straighten your arms toward the ceiling. Routing the cable from behind and below keeps constant tension on your triceps through the entire range, including the fully stretched position at the bottom, which a dumbbell can't match once gravity stops pulling on it. It's a beginner-friendly way to isolate the triceps without needing a bench or a heavy bar.
Why it works
The triceps' main job is straightening the elbow, and it does that hardest when the arm starts in a deeply bent, overhead position, which is exactly where a low cable places the resistance. Because the cable pulls down and back rather than straight down like gravity does, your triceps stay under load even as your arms pass overhead, where a dumbbell extension would otherwise go slack. Your shoulders hold a static overhead position throughout, which is why this move also demands some shoulder mobility and control, not just triceps strength.
Set up
- Set a pulley to its lowest position and attach a rope or straight bar.
- Face away from the machine, grab the attachment with both hands, and raise it overhead with your elbows bent.
- Take a small step forward so the cable stays taut, and brace your torso so it doesn't sway with the pull.
How to do it
- Start with your elbows bent, hands behind your head, upper arms close to your ears.
- Extend your elbows to press the attachment up and slightly forward until your arms are straight.
- Pause briefly at full extension, keeping your upper arms still.
- Bend your elbows and lower the attachment back behind your head with control.
- Stop the descent once you feel a full stretch across the triceps, without letting your upper arms drift forward.
- Repeat without letting your torso rock to help the lift.
Form cues
- Pin your elbows next to your ears and leave them there.
- Only your forearms should move.
- Straighten fully at the top, don't stop short.
- Keep your ribs down instead of arching to help the pull.
Breathing: Exhale as you straighten your elbows, inhale as you lower back down.
Common mistakes
Letting the elbows drift forward and down during the extension, turning it into a shoulder press.
Fix: Keep your upper arms pinned next to your ears for the whole set, so only your forearms travel.
Arching the lower back to add momentum to the lift.
Fix: Brace your core and keep your ribs stacked over your hips, using your triceps alone to move the weight.
Stopping the extension short of straight arms, which trims off the hardest part of the range.
Fix: Push all the way to a full, straight-arm lockout every rep, then control the return.
How to program it
- Two or three sets of 10 to 15 reps is plenty, since this is a single-joint isolation move rather than a heavy strength lift.
- Program it after your main pressing work, once your triceps are already warm from compound pushing movements.
- Because the load stays light to moderate and the joint involved is small, twice a week works for most people without extra recovery cost.
Safety notes
- If you feel sharp pain at the elbow rather than muscle fatigue, stop and lower the weight; a small, well-controlled range is safer than chasing a heavier stack.
- Keep your shoulders down and away from your ears throughout; shrugging under the overhead position adds unnecessary strain to the neck and traps.
Exercise profile
- Force
- Push
- Mechanics
- Isolation
- Category
- Strength
Frequently asked questions
How many sets and reps should I do for the low cable triceps extension?
Two or three sets of 10 to 15 reps is a sensible range, since this move is meant to isolate the triceps after your heavier pressing work rather than replace it.
What can I do at home without a cable machine?
An overhead extension with a single dumbbell or a resistance band anchored under your foot copies the same overhead elbow-extension pattern without a cable station.
Low cable triceps extension vs triceps pushdown, which is better?
Neither replaces the other; the overhead position loads the long head of the triceps harder through the stretch, while the pushdown loads the triceps more evenly with less shoulder demand. Many lifters use both across a week.
Why do my elbows hurt during this exercise?
Elbow discomfort here is usually a sign the weight is too heavy for you to keep your elbows pinned still, or that you're locking out too forcefully at the top. Lighten the load and stop the lockout just short of hyperextending.