A weight training sled having (i) a chassis, (ii) longitudinally spaced rotatable wheels in contact with ground, (iii) a pair of laterally spaced push handles proximate a first longitudinal end of the chassis and (iv) a brake for applying resistance to one of the wheels, characterized by an elevated tow hook.

A weight training sled having (i) a chassis, (ii) longitudinally spaced rotatable wheels in contact with ground, (iii) a pair of laterally spaced push handles proximate a first longitudinal end of the chassis and (iv) a brake for applying resistance to one of the wheels, characterized by an elevated tow hook.

A treadmill may include a deck, a first pulley incorporated into the deck, a second pulley incorporated into the deck, a tread belt surrounding the first pulley and the second pulley, a motor in mechanical communication with at least one of the first pulley and the second pulley to move the tread belt in a first direction, and a runaway mitigation mechanism in at least indirect mechanical communication with the motor. The runaway mitigation mechanism at least mitigates a motor runaway condition.

A treadmill may include a deck, a first pulley incorporated into the deck, a second pulley incorporated into the deck, a tread belt surrounding the first pulley and the second pulley, a motor in mechanical communication with at least one of the first pulley and the second pulley to move the tread belt in a first direction, and a runaway mitigation mechanism in at least indirect mechanical communication with the motor. The runaway mitigation mechanism at least mitigates a motor runaway condition.

An exercise machine and a resistance and brake compound control structure are disclosed. The resistance and brake compound control structure includes a sleeve, a push rod, an elastic member, a compound operating member, and a pushing member. The push rod is disposed in the sleeve. The elastic member exerts a force to the push rod for giving the push rod a return elastic force. The compound operating member includes an operating portion and a screw rod. The screw rod has a pushing end extending into the sleeve. The pushing member is disposed in the sleeve in a non-rotatable manner. The pushing member has a threaded hole. The screw rod is screwed to the threaded hole. The exercise machine uses the resistance and brake compound control structure to adjust resistance and brake.

An exercise machine and a resistance and brake compound control structure are disclosed. The resistance and brake compound control structure includes a sleeve, a push rod, an elastic member, a compound operating member, and a pushing member. The push rod is disposed in the sleeve. The elastic member exerts a force to the push rod for giving the push rod a return elastic force. The compound operating member includes an operating portion and a screw rod. The screw rod has a pushing end extending into the sleeve. The pushing member is disposed in the sleeve in a non-rotatable manner. The pushing member has a threaded hole. The screw rod is screwed to the threaded hole. The exercise machine uses the resistance and brake compound control structure to adjust resistance and brake.

An isometric force resistant exercise tool has a left handle form interfaced to a right handle form over an axle shaft locked to the right handle form, the axle shaft supporting a pressure plate, a compress able spring or set of springs, and a compression adjustment handle threaded onto the axle shaft and abutting the compress able spring or spring set, the pressure plate adjacent in assembly to a friction-resistive material fixed on the left handle form, the left handle form including a piston form interfacing with a ring housing on the right handle form, the piston form adjacent in assembly to a friction-resistive material fixed on the right handle form. Gripping the handle forms and rotating the against force resistance exercises one or more muscle groups.

An isometric force resistant exercise tool has a left handle form interfaced to a right handle form over an axle shaft locked to the right handle form, the axle shaft supporting a pressure plate, a compress able spring or set of springs, and a compression adjustment handle threaded onto the axle shaft and abutting the compress able spring or spring set, the pressure plate adjacent in assembly to a friction-resistive material fixed on the left handle form, the left handle form including a piston form interfacing with a ring housing on the right handle form, the piston form adjacent in assembly to a friction-resistive material fixed on the right handle form. Gripping the handle forms and rotating the against force resistance exercises one or more muscle groups.

An exercise apparatus includes a resistance device including left and right sheaves and associated rewind mechanisms. Left and right cords are routed from the sheaves through left and right swivel pulleys to left and right force receiving members. A person stands on a foot platform and exercises by using her arms and/or her legs to pull the cords from the sheaves. The person may stabilize herself by placing one or both hands on handlebars when those hands are not involved in the pulling activity.