Phina okokusebenza okukhethiwe kokusebenza ikakhulukazi imisipha ye-triceps brachii kanye nokusiza ekusebenzeleni umsipha wangaphambili we-serratus. Umuntu ovocavoca umzimba angasebenza ngempumelelo umsipha wengalo engenhla nowomboko ngokusunduza izibambo zengalo ezishukumisayo zibe sezinhlangothini ezimbili ngesikhathi esisodwa ngemva kokukhetha isisindo esifanele.