For biceps growth

Concentration Curl vs Spider Curl

For biceps growth, the two are close. Concentration curl rates slightly higher: more stretch.

Spider curl is easier to progress.

Both are good choices that train the biceps the same way, so they swap freely. Rotating between them every few weeks is an easy way to vary your training.

Research score

Target tension

Excellent

Loaded stretch

Fair

Weak

Progression

Good

Strong

Low cost

Excellent

See the full biceps ranking

What these mean

Target tension.: Whether the muscle you’re training is what gives out first, not your grip, balance or other muscles.
Loaded stretch.: How hard the muscle works while stretched. Training it there is linked to more growth.
Progression.: How easily you can keep adding weight in small steps over months and years.
Low cost.: How easy it is on your joints and recovery, and how quickly you can learn it.

The research score comes from these, scored by hand from the studies. Lifter scores appear once an exercise has 10 ratings. How scores work

When each one fits

Good reasons to choose concentration curl

You want more load on the biceps while they’re stretched
One side is weaker than the other

Good reasons to choose spider curl

You want to keep adding weight in small steps

Concentration Curl

Spider Curl

You need

Dumbbells, bench

Skill

Easy to learn

Type

Isolation

One side at a time

Yes

Why they rank where they do

Concentration Curl. Bracing the arm on the thigh stops any cheating, but the bottom is light and dumbbells jump in big steps.

Spider Curl. Hardest at the top, where the biceps is shortest.

Questions

Which is better for biceps growth, concentration curl or spider curl?

For biceps growth, the two are close. Concentration curl rates slightly higher: more stretch. Spider curl is easier to progress. Both are good choices that train the biceps the same way, so they swap freely. Rotating between them every few weeks is an easy way to vary your training.

Is concentration curl or spider curl easier to learn?

About the same: both are easy to learn.

Can you do concentration curl or spider curl at home?

Concentration curl needs dumbbells and a bench, so a home gym covers it. Spider curl needs dumbbells and a bench, so a home gym covers it.

Which is easier on the joints, concentration curl or spider curl?

About the same: both rate Excellent for joint and recovery cost in our research rubric.

More comparisons

Concentration Curl Spider Curl All biceps exercises

Concentration Curl vs Spider Curl

For biceps growth, the two are close. Concentration curl rates slightly higher: more stretch.

Spider curl is easier to progress.

Both are good choices that train the biceps the same way, so they swap freely. Rotating between them every few weeks is an easy way to vary your training.

What these mean

Target tension.: Whether the muscle you’re training is what gives out first, not your grip, balance or other muscles.
Loaded stretch.: How hard the muscle works while stretched. Training it there is linked to more growth.
Progression.: How easily you can keep adding weight in small steps over months and years.
Low cost.: How easy it is on your joints and recovery, and how quickly you can learn it.

The research score comes from these, scored by hand from the studies. Lifter scores appear once an exercise has 10 ratings. How scores work

When each one fits

Good reasons to choose concentration curl

You want more load on the biceps while they’re stretched
One side is weaker than the other

Good reasons to choose spider curl

You want to keep adding weight in small steps

Concentration Curl

Spider Curl

You need

Dumbbells, bench

Skill

Easy to learn

Type

Isolation

One side at a time

Yes

Why they rank where they do

Concentration Curl. Bracing the arm on the thigh stops any cheating, but the bottom is light and dumbbells jump in big steps.

Spider Curl. Hardest at the top, where the biceps is shortest.

Questions

Which is better for biceps growth, concentration curl or spider curl?

Is concentration curl or spider curl easier to learn?

About the same: both are easy to learn.

Can you do concentration curl or spider curl at home?

Concentration curl needs dumbbells and a bench, so a home gym covers it. Spider curl needs dumbbells and a bench, so a home gym covers it.

Which is easier on the joints, concentration curl or spider curl?

About the same: both rate Excellent for joint and recovery cost in our research rubric.