If training your biceps is a regular part of your workout routine, investing in an adjustable preacher curl bench can be worthwhile. It is a popular choice for both commercial and home gyms as it provides an excellent isolated biceps workout without adding complexity. Just keep in mind that the preacher curl bench uses free weights for exercising, unlike the cable-based preacher curl machine commonly found in gyms. Therefore, you will also need to acquire appropriate bars and weights to be able to train effectively.