有時見到人用沙袋綁小腿,又會見到沙袋綁手臂,通常都說可鍛鍊四肢的力量,事實上真係有用嗎?
By jay chou (pupil) on 2010-01-11 Answers 1 Views 135
By kelvin yeung (middle-school student) on 2010-01-18
我有朋友試過,佢地話真係有用架,真係練到肌肉。