It will build lean muscle, and athletic ability you will be just as strong not really stronger then if had been lifting barbells. There is a functional fishing harbor here, worth a explore. This fast paced film is a superb kinetic visual experience. http://dh.aks.ac.kr/workshop/index.php/Benimle_Birlikteyken_Sizlerde_De%C4%9Fi%C5%9Fkenlik_G%C3%B6steren_Seksiyim