Taxanaha Alien Biceps Curl waxa uu leeyahay booska qallooca sayniska, oo leh gacan toosan oo raaxo leh, kaas oo la qabsan kara isticmaalayaasha kala duwan.Kursiga hal-kursiga ah ee lagu hagaajin karo kaliya kama caawin karo isticmaaluhu inuu helo booska dhaqdhaqaaqa saxda ah, laakiin kicinta waxtarka leh ee biceps-ka ayaa ka dhigi karta tababarka mid kaamil ah.Kursiga waxaa loo hagaajiyay ergonomically si loo helo taageero iyo raaxaysi wanaagsan.