The best way to work any muscle is to isolate that muscle group. The preacher curl exercise isolates the biceps better than any other exercise. Since your arms rest on the pad, all momentum is taken out which works the biceps instead of the shoulders. Click here for an in depth guide to the preacher curl. Here at Fitness Destination we carry several home models to commercial preacher curl benches, pads, and preacher curl attachments for other benches. Shipping is included in the price of purchase.