A well designed preacher curl bench has the two surfaces – one is vertical for a variation of the spider curl and the other is slanted at roughly a 45 degree angle for the preacher curl proper. (So named for the angle being similar to the angle of the reading surface on most pulpits.)Click to see full answer. Likewise, people ask, do I need a preacher curl bench? Benefits of preacher curls Negative movement really improves muscle growth as well as improving strength. The only downside for a preacher curl is that it requires a preacher bench to perform the exercise. No need to fret though, because you can still do your bicep curls, be sure to have the perfect form.Likewise, are preacher curls bad? 10 dangerous exercises that lead to injuries. Preacher curl: There is no stabilization of your core or lats because your shoulder blades are out of place and you are in a forward posture. Pull-up: Done improperly, pull-ups can lead to shoulder issues. Accordingly, what part of the bicep do preacher curls work? Whether you perform the preacher curl with a dumbbell or barbell, standing or sitting, the target muscle of this exercise is the brachialis muscle, which is part of your lower biceps. The brachialis aids the flexion of your elbow.Why is it called preacher curl? ETYMOLOGY OF THE WORD PREACHER CURL From the resemblance of the exerciser using the bench to a preacher leaning over the pulpit.