تیم تیر اندازی با کمان تبـــــــریز
Mar 22, 2010·Use a length of spear gun rubber or rubber tubing, grasp each end behind back, hold arms at shoulder level, then swing arms forwards to stretch rubber. hold for 10 seconds. Repeat about 6 times. To loosen shooting muscles. Use a length of spear gun rubber or rubber tubing tied in a loop, imitate the shooting draw.