Spider Curl
A beginner isolation movement that trains the biceps with an EZ curl bar.
Force Type
Pull
isolation
Difficulty
Beginner
isolation
Variations
0
equipment swaps
Muscles
1
primary + secondary
The verdict
Spider Curl has 7-step instructions, among the most thoroughly documented of the 53 biceps exercises PlainExercise catalogues.
Ranked against the 53 biceps exercises PlainExercise currently catalogues, not the full exercise-science literature.
Catalog lens
Two ways this record sits in the source corpus
These are placement measures for the documented record, not a score for exercise quality, safety, or suitability.
Instruction steps
#55 of 868
7 numbered source steps; the longest instruction list ranks #1.
Instruction text
#122 of 868
A separate character-length placement prevents step count from standing in for explanatory detail.
Spider Curl is a beginner isolation movement that trains the Biceps. It requires an EZ curl bar. There are 0 known variations and 8 peer exercises that target the same primary muscle.
- 1 of 9 exercises targeting the Biceps
- Level: beginner
PlainExercise cross-links 0 variations and 8 peer exercises sharing the same primary muscle.
What the Spider Curl Data Reveals · DEEP · PULL/ISOLATION
Spider Curl opens on mechanic class: ISOLATION pull work for biceps with 0 catalogued assistants, joint involvement separates this page from isolation peers.
Among 873 exercises, 7 steps sit in the upper third (≥ 5). Longer step lists usually mean finer setup cues, not a harder movement by themselves.
Spider Curl is classified as a beginner-level isolation movement with a pull force profile, primarily training the Biceps. The canonical form requires an EZ curl bar in the strength category. Within the biceps cohort, 9 catalogued movements share the primary target; no alternate-equipment variations are catalogued yet.
Context matters: taxonomy (level, mechanic, force, musculature, equipment) does not account for individual biomechanics, joint history, or recovery. Common-mistake framing below is derived from classification fields, not case-specific coaching. Not medical or personal-training advice. Consult a physician or certified trainer before starting, especially with injuries, cardiovascular conditions, recent surgery, or pregnancy.
Exercise profile
| Attribute | Value |
|---|---|
| Difficulty | beginner |
| Mechanic | isolation |
| Force | pull |
| Equipment | e-z curl bar |
| Category | strength |
| Primary muscle | Biceps |
| Secondary muscles | 0 |
| Variations available | 0 |
Source: Free Exercise DB (CC0); profile derived per exercise record.
Spider Curl catalog footprint
Among 53 exercises whose primary muscle is biceps, Spider Curl ranks #3 by catalogued variation count (0 listed heres). The upstream file attaches 2 images to this slug. See the step-count ranking for biceps for peer documentation depth.
Muscles worked
According to the Free Exercise DB classification, Spider Curl trains the biceps as the prime mover and no catalogued secondary muscles. The source classifies muscles as primary or secondary, it does not measure activation, so we show involvement, not percentages.
Source: Free Exercise DB primary/secondary muscle classification. Involvement, not measured activation, actual recruitment varies by load and form.
Intensity context
For reference, here is where common activities sit on the MET intensity scale. Spider Curl does not have a measured MET in the source data, its intensity depends on the load and effort you use. Estimate calories for any activity with the calorie calculator.
MET values from the Compendium of Physical Activities (Ainsworth et al., 2011). A general reference scale, not a rating of this specific movement.
How to do it
- Start out by setting the bar on the part of the preacher bench that you would normally sit on. Make sure to align the barbell properly so that it is balanced and will not fall off.
- Move to the front side of the preacher bench (the part where the arms usually lay) and position yourself to lay at a 45 degree slant with your torso and stomach pressed against the front side of the preacher bench.
- Make sure that your feet (especially the toes) are well positioned on the floor and place your upper arms on top of the pad located on the inside part of the preacher bench.
- Use your arms to grab the barbell with a supinated grip (palms facing up) at about shoulder width apart or slightly closer from each other.
- Slowly begin to lift the barbell upwards and exhale. Hold the contracted position for a second as you squeeze the biceps.
- Slowly begin to bring the barbell back to the starting position as your breathe in. .
- Repeat for the recommended amount of repetitions.
Spider Curl Documentation Depth
Spider Curl carries 7-step instructions (983 characters of Free Exercise DB text) - enough upstream detail to compare documentation depth inside the biceps cohort, not just the taxonomy badges above. Across 53 catalogued biceps movements, the average instruction record is 734 characters and 4.9 steps; 48 of those (90.6%) clear the same ≥500-character rich bar used here. This page ranks #6 of 53 by instruction-character length (1.34× the cohort average).
Among the 9 exercises that also use an EZ curl bar, average instruction length is 684 characters; 1 of those peers are longer than this record. Equipment-matched peers are the honest comparison when you are choosing a substitute implement for the same pattern.
Other well-documented biceps movements (same ≥500-character bar):
- Concentration Curls (5 steps, 1,150 chars)
- Flexor Incline Dumbbell Curls (6 steps, 1,070 chars)
- Seated Close-Grip Concentration Barbell Curl (5 steps, 1,039 chars)
- Zottman Curl (8 steps, 1,025 chars)
- Standing Inner-Biceps Curl (7 steps, 1,024 chars)
Common mistakes
- Rushing through reps before the pattern is grooved - at this stage, a slow, controlled tempo (2-3s down, 1-2s up) on Spider Curl teaches the nervous system the movement far faster than speed does.
- Cutting the range of motion short - moving the biceps through its full safe range on Spider Curl is what most reliably separates effective reps from wasted ones.
- Using momentum instead of muscle, isolation movements like Spider Curl reward strict form. If you're swinging the weight, it's too heavy.
- Shrugging the shoulders up toward the ears on pull movements, keep shoulder blades down and back to load the correct muscles.
- Breathing out of sync with the lift on Spider Curl - brace and inhale during the lowering phase, exhale on the exertion, especially important with an EZ curl bar where control matters most.
Who this is for
- People new to resistance training who want to build a foundation in the movement pattern
- People who want to train the Biceps
- People who have access to an EZ curl bar
Who this is NOT for
- People hunting equipment swaps, PlainExercise lists 0 catalogued variations for Spider Curl; browse 8 peer biceps exercises for alternate patterns instead.
- Anyone with acute pain in the joints or muscles involved, pain is a stop signal, not a soreness signal
- People with unresolved injuries in the loaded joints, seek clearance from a physical therapist first
- Anyone with a recent surgery, cardiovascular limitation, or pregnancy complication without physician clearance
Progression path
Once Spider Curl feels comfortable with your current load, progress by (a) adding reps until you can complete 12+ per set, (b) increasing resistance by 2.5-5%, (c) moving to harder variations such as single-limb or longer lever versions, and eventually (d) stepping up to intermediate-level movements that train the same muscle.
See the Progression guide for a full framework on when to advance, and the Compound vs Isolation guide to decide when to prioritize this movement in your program.
Safety notes · E-Z-CURL-BAR · PULL/ISOLATION · FLOOR
- On PULL/ISOLATION biceps work, warm up 5–10 minutes before loading Spider Curl; keep first sets light until the path feels automatic.
- Sharp or joint pain is a stop signal. Muscle soreness during sets is normal; pain is not.
- Beginners on E-Z-CURL-BAR gear: cut volume before cutting form, drop a set rather than rush reps.
- General information only. Consult a physician or certified trainer before starting any new exercise program.
Nationwide exercises with similar documentation depth
Two Free Exercise DB peer sets for Spider Curl, drawn across all muscles (not the biceps-only related list below). Each metric produces a different neighborhood.
Similar instruction step count
Nearest catalog records by numbered steps (7 here).
Similar instruction text length
Nearest catalog records by upstream instruction characters (983 here).
Related exercises
Other exercises that target the Biceps.
See all Biceps exercises.
Using the spider curl
A beginner isolation movement for the biceps - here's how to put it to work.
- Train the biceps 2–3 times a week with 48+ hours between hard sets; pair this with other biceps movements for balanced development. All biceps exercises
- Match the load and rep range to your goal, strength, size, or endurance each call for a different scheme. Strength vs hypertrophy
- As an isolation movement, use it to target the biceps directly after your compound lifts. Compound vs isolation
Form before load. If a movement causes sharp or joint pain, stop and substitute a safer alternative, this is general information, not medical or training advice.