How to Do London Bridges
Start and end of one clean rep of London Bridges.
Quick facts
| Primary muscle | Back |
|---|---|
| Secondary muscles | Biceps, Forearms |
| Equipment | Machine |
| Category | Strength |
How to perform London Bridges
- Attach a climbing rope to a high beam or cross member. Below it, ensure that the smith machine bar is locked in place with the safeties and cannot move. Alternatively, a secure box could also be utilized.
- Stand on the bar, using the rope to balance yourself. This will be your starting position.
- Keeping your body straight, lean back and lower your body by slowly going hand over hand with the rope. Continue until you are perpendicular to the ground.
- Keeping your body straight, reverse the motion, going hand over hand back to the starting position.
Muscles worked
- Back (primary): pulls the arms down and toward the torso and keeps the spine stable.
- Biceps (secondary): bends the elbow and turns the palm up during pulls and curls.
- Forearms (secondary): controls your grip and keeps the wrist steady under load.
Sets & reps by goal
| Goal | Sets × reps | Load | Rest |
|---|---|---|---|
| Strength | 3–5 × 3–5 | Heavy (~85%+) | 2–3 min |
| Hypertrophy | 3–4 × 8–12 | Moderate (~65–75%) | 60–90 s |
| Endurance | 2–3 × 15–20 | Lighter (~50–60%) | 30–45 s |
Pick the row that matches your goal. If you're newer, anchor in the hypertrophy range while you groove the form.
Form tips
- Start each rep by pulling the shoulder blades in first, then drive with the elbows — think of pulling with the elbows, not the hands.
- Set the seat and pads so the machine's pivot lines up with the joint you're training before your first rep.
- Treat every rep the same — a repeatable setup and bar path is what lets you add weight safely over time.
- Breathe out on the effort and in on the return, keeping one steady rhythm across the set.
Common mistakes
- Yanking with the arms and forgetting the back, so the biceps give out before the target muscle does.
- Leaving the seat or range on a setting that forces the joint into an awkward angle.
- Chasing weight jumps before the current load feels solid on every rep.
Frequently asked questions
What muscles does London Bridges work?
London Bridges mainly works the back, with the biceps, forearms helping as secondary movers.
What equipment do I need for London Bridges?
London Bridges needs the corresponding weight-stack or plate-loaded machine.
How many sets and reps should I do for London Bridges?
It depends on your goal: about 3–5 sets of 3–5 heavy reps for strength, 3–4 sets of 8–12 for muscle growth, or 2–3 sets of 15–20 for endurance. Pick the row that matches your goal. If you're newer, anchor in the hypertrophy range while you groove the form.
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