Improved structure for body-building apparatus

The utility model relates to an improved structure for a body-building apparatus. Two holding power rods of the utility model are correspondingly connected with each other through the mode of pin joint, and the inner part of the pin joint end is jointly provided with a traction force elastic body which keeps in the stretched state. A counterpoise is arranged at the center of the traction force elastic body. A screw rod with a knob runs through the counterpoise and the pin joint end of two holding power rods, and then, the holding power rods and the counterpoise are connected together by the mode of the pin joint. The other end of two holding power rods is provided with a shaft lever end, and the external part of the shaft lever end can be coated with two torque force casing cover in the pivot transmission state so as to form a rotating handgrip; the external part of the rotating handgrip is coated with a cotton bubble body. By the change of the counterpoise, the central weight of the holding power rods can be increased and decreased, and the tightness extent of the traction force elastic body can also be increased and decreased. The rotating handgrip is formed so that the utility model has the functions of holding and pressing body-building by hands and the revolving body-building by wrists.