How to Do Spider Curls at Home: Form, Bench Angle, Tips

What Are Spider Curls?

A spider curl is a biceps isolation exercise performed while lying face-down (prone) on an incline bench. Unlike standard standing curls where your core and legs stabilize you, the bench supports your chest, allowing your arms to hang vertically toward the floor.

How they differ from other curls:

• Standard Barbell Curls: Standing curls allow for more body English and momentum; spider curls eliminate this.
• Preacher Curls: In preacher curls, your elbows rest on a pad. In spider curls, your elbows hang freely, requiring you to stabilize the shoulder joint using muscular control.
• Incline dumbbell curls: Incline curls are done face up with the arms behind the body, often creating a bigger stretch. Spider curls place the arms in front of the body, which many lifters feel more at the top squeeze.

Primary Muscles Worked:

• Biceps Brachii: The main target. Because the upper arm sits forward, many people feel strong tension near peak contraction, though individual anatomy varies.
• Brachialis & Brachioradialis: These muscles assist in elbow flexion, especially during the lifting phase.

Spider curls and preacher curls are not the same exercise, even though the two share a bench and a similar short head emphasis. A spider curl hangs the upper arms in front of the torso and removes the pad support entirely, so the biceps also hold the shoulder position; a preacher curl rests the upper arms on a sloped pad and takes that stabilizing job away. The practical outcome is that spider curls feel heaviest at the top, while preacher curls feel heaviest in the stretched bottom position. If you enjoy the pump from either movement, both remain available to you at home.

The name spider curl is often linked to old school bodybuilding benches, but today it mainly refers to the chest supported position over an incline bench.

"Exercises such as preacher curls and concentration curls (where the upper arm is positioned in front of the torso) work more in the short head, as do exercises such as cross cable curls on a high pulley apparatus."
Brad Schoenfeld, PhD, Exercise Science Researcher specializing in Muscle Hypertrophy, CUNY Lehman College, The Science of Biceps Training

How To Set Up For Spider Curls

For most lifters the best bench angle for spider curls is 30 to 45 degrees, with 45 degrees as the default because it puts the upper arms almost perpendicular to the floor at the bottom of the rep. Steeper than 60 degrees shortens the stroke and dumps the load onto the shoulder; flatter than 30 degrees lets the bar or dumbbells drift under the bench edge so the bottom range disappears.

• Bench angle: Start at 45 degrees. If the top of the rep feels cramped, drop to 35 degrees; if you feel the tension leave the biceps at the bottom, raise it toward 50 degrees. If your bench only has three or four notch positions, the second-steepest setting is usually the closest match to 45 degrees.
• Bench height: Set the pad high enough that your arms clear the floor at the bottom of the rep, yet low enough that your feet stay planted. Feet flat on the floor, knees soft.
• Equipment: You can use an EZ bar, a straight barbell, or dumbbells. An EZ bar is often preferred as it reduces wrist strain.
• Grip: Use a standard underhand (supinated) grip. A shoulder-width grip is ideal for general development, while a slightly narrower grip can emphasize the outer bicep slightly more.

No preacher bench and no adjustable bench at home? You still have options, and they all reproduce the same downward hang:

• Prop a flat bench: Put a 45 pound plate or a block under one end of a flat bench to raise it to roughly 40 degrees, then lie on the raised side with your chest on the vinyl and your feet braced on the floor. Pad the raised end with a folded towel or foam block so the bench does not tilt.
• Use a preacher pad in reverse: Kneel or stand behind the pad so your upper arms hang over the far side with your chest against the pad surface. This works with a RitFit Preacher Curl Pad or any preacher bench you can approach from the back.
• Use the end of a weight bench or a bed frame: Lie face down with your chest at the very edge and your arms hanging past the end. Add a folded towel under the sternum for comfort. Keep the surface firm so your chest cannot sink and change the angle.
• Pick the load before the surface: Grab a pair of adjustable dumbbells that let you drop to 10 or 15 pounds per hand. Spider curls expose any weight that is too heavy within the first two reps.

Step-By-Step: How To Do Spider Curls With Perfect Form

Spider curl form follows one rule before every other: the chest stays on the pad and the elbows stay still. Follow the five steps below with a light load first, and add weight only when the tempo and the range hold.

Quick Form Checklist

1. Chest stays glued to the pad
2. Elbows stay still in space
3. Full range without slamming joints
4. Slow controlled lowering every rep

Follow these steps to ensure you are targeting the biceps safely and effectively.

• Step 1: Lock in your body position so your biceps do the work. Lie face down on a 30-45 degree incline bench with your chest pressed firmly into the pad, feet planted on the balls for stability, and arms hanging straight down.
• Step 2: Set your arms and keep your elbows frozen in place. Grip the bar or dumbbells with palms up and keep your upper arms close to perpendicular to the floor, with shoulders slightly in front of the bench edge.
• Step 3: Curl up using your biceps only and squeeze hard at the top. Take a breath, brace lightly, and lift the weight smoothly without letting your elbows drift forward or backward as the weight approaches shoulder level.
• Step 4: Lower slowly and stay in control to build more muscle safely. Fight gravity for 2-3 seconds on the way down until your elbows are fully extended and you feel a light stretch, stopping short of a hard lockout if your elbows are sensitive.
• Step 5: Breathe and use a strict tempo to maximize time under tension. Exhale as you curl up, inhale as you lower, and follow a 1 second lift, 1 second squeeze, and 2-3 second controlled descent for every rep.

Common Mistakes To Avoid

Even though the bench restricts movement, errors can still occur. The five below account for almost every spider curl that produces sore shoulders instead of sore biceps.

• Swinging the Weight: Even with chest support, lifters may try to generate momentum by jerking the torso. Keep your chest glued to the pad.
• Elbow Drift: A common error is pulling the elbows back or pushing them forward during the curl. This shifts tension to the front delts or reduces the lever arm. Keep elbows frozen in space.
• Half Reps: Stopping short at the bottom denies the bicep a full stretch. Ensure you lower the weight all the way down, or shift to a shallower angle if the bench blocks your range.
• Shrugging Shoulders: If the weight is too heavy, you might engage your traps. Keep your shoulders depressed (down) and away from your ears.
• Ego Lifting: Spider curls are an isolation exercise, not a power movement. Using excessive weight usually leads to poor form and reduced muscle activation.
• Wrist Strain: A straight bar can force the wrists into an awkward position. Switching to an EZ curl bar or dumbbells removes most of that pressure.

Benefits Of Spider Curls

Why should you choose spider curls over other variations?

• Maximum Biceps Isolation: Because your torso is supported, you cannot use your lower back or hips to cheat the weight up.
• Constant Tension: Due to the angle of your torso, gravity acts on the biceps effectively throughout the entire range of motion, especially at the top contraction point where other curls might lose tension.
• Better Peak & Definition: The position emphasizes the shortened range of the biceps, which is excellent for developing the "peak."
• Joint-Friendly: For those with lower back pain, the chest support removes axial loading from the spine. It is also generally easier on the shoulders compared to movements that require overhead mobility.
• Home Friendly: A single foldable utility bench plus one pair of dumbbells is all the equipment the movement requires, which makes it a better fit for a spare room than cable based arm work.

Spider Curl Variations

You can tweak the exercise to target different areas of the arm. Pick one variation per session and rotate every three to four weeks so the same joint angle does not wear on your elbows.

• EZ-Bar Spider Curls: The most common variation. The cambered bar places wrists in a semi-supinated position, which is more comfortable for many lifters.
• Dumbbell Spider Curls: Using dumbbell bicep curls in a spider position ensures that your dominant arm does not take over. It also allows for a greater range of motion as you are not restricted by a bar hitting the bench.
• Hammer Spider Curls: Perform the movement with a neutral grip (palms facing each other). This shifts the focus to the brachialis and brachioradialis, helping to build arm thickness.
• Cable Spider Curls: Set a bench in front of a low pulley machine from a cable machine. The constant tension of the cable provides a unique stimulus and smooth resistance profile.
• Single-Arm Spider Curls: Performing the movement one arm at a time allows for intense focus and helps correct strength imbalances between the left and right sides.

How To Program Spider Curls In Your Workout

Spider curls fit best in hypertrophy-focused routines, once the body is already warm and the biceps are not needed for a heavier movement.

• Who should use them: Anyone from beginners to advanced bodybuilders looking to isolate the biceps.
• Placement: Place them toward the middle or end of your arm workout. Do your heavy compounds (like rows or weighted chin-ups) or heavy standing curls first.
• Sets & Reps: Since this is an isolation movement, aim for 3 to 4 sets of 8 to 15 repetitions. Focus on the "pump" and quality of contraction rather than low-rep strength.
• Rest: Take 60 to 90 seconds between sets. The biceps recover quickly, and longer rest just lets the muscle cool down before the next set.
• Sample Routine Snippet:
  • Barbell Rows: 3 x 8-10
  • Standing Barbell Curls: 3 x 8-10
  • Dumbbell Spider Curls: 3 x 12-15
  • Triceps Pushdowns: 3 x 12-15

If you train back and biceps on the same day, place the spider curls after the rowing work. A broader list of paired movements appears in this back and bicep workout collection of sessions.

Tips For Better Results With Spider Curls

To get the most out of every rep, keep these tips in mind:

• Lighten the Load: You will likely need less weight for spider curls than for standing curls. A rough starting point is 50 to 70 percent of what you can curl standing for the same rep count, then adjust from there.
• Mind-Muscle Connection: Visualize your biceps contracting. Squeeze hard at the top for a full two seconds.
• Slow Eccentric: Take 3 seconds to lower the weight. The negative phase is powerful for muscle growth.
• Add Isometrics: Occasionally pause halfway up or at the top to increase intensity without adding weight.
• Track the Angle: Log the bench notch you used. Chasing a new notch every session makes it impossible to tell whether the extra weight came from strength or from a shorter range.

Safety & Modifications

Spider curls are generally very safe, but precautions apply.

• Elbow Health: If you feel pain in your elbows, try switching from a straight bar to an EZ bar or dumbbells to allow natural wrist rotation.
• Shoulder Comfort: Ensure your shoulders are not rolling forward excessively. Keep your chest proud against the pad.
• Unstable Surfaces: Skip the movement entirely if the only available surface rocks or shifts. A bench that tilts under load puts your wrists and neck in a bad position.
• Modifications: If you do not have an incline bench, you can simulate the angle by leaning over a preacher bench from the opposite side (standing and leaning over the pad). This is the closest thing to spider curls without an incline bench.

FAQs

What makes spider curls different from standard standing curls?

Spider curls completely eliminate body momentum by requiring you to lie face down on an incline bench.

This strict isolation forces your biceps to do all the work.

You cannot use your legs or lower back to swing the weight upward, which ensures maximum muscle tension.

How should you set up the bench for this exercise?

You should set an adjustable bench to an incline of thirty to forty-five degrees.

A standard angle of forty-five degrees works perfectly for most people.

This specific angle allows your arms to hang vertically toward the floor, which targets the biceps optimally during the movement.

Do you need a preacher bench for spider curls?

No. A preacher bench makes the movement easier to set up, but it is not required. Any firm surface that supports your chest while your upper arms hang free will work.

Why do many lifters prefer using an EZ bar for spider curls?

An EZ bar reduces wrist strain by keeping your hands in a slightly more natural position.

Using a straight barbell can sometimes cause discomfort in the joints.

The cambered design of the EZ bar allows for a semi supinated grip, making the exercise much safer and more comfortable.

What specific muscle groups do spider curls primarily target?

This movement primarily targets the short head of the biceps brachii.

Positioning your arms in front of your torso emphasizes the shortened range of the muscle.

This specific placement is excellent for developing the peak of your biceps, while secondary muscles assist in the elbow flexion process.

How can someone avoid the most common mistakes during this movement?

You must keep your elbows completely still and prevent them from drifting forward or backward.

Pulling the elbows out of position shifts the tension away from the biceps.

You also need to maintain your chest firmly on the pad, which stops you from using your torso to swing.

Conclusion

Spider curls are a highly effective exercise for isolating the biceps, eliminating momentum, and placing constant tension on the muscle. By strictly adhering to the proper form, keeping the chest supported and elbows stationary, you can unlock new growth and definition in your arms.

Whether you are training at a commercial gym or at home with basic equipment, incorporating spider curls into your routine is a smart move for better aesthetics and stronger arms. Set your bench near 45 degrees today, add 3 sets of 12, and add them to your next pull day or arm session.