An exercise device is described. An exercise device includes a body, the body having a top, a bottom, a first end located at one edge of the body, a second end located at an opposite edge of the body, and first and second sides extending between the first and second ends; one or more wheels; and an energy storage device applying resistive and restoring force to the one or more wheels. Optionally, a shaft can be present that rotationally locks two or more of the wheels.

An exercise device is described. An exercise device includes a body, the body having a top, a bottom, a first end located at one edge of the body, a second end located at an opposite edge of the body, and first and second sides extending between the first and second ends; one or more wheels; and an energy storage device applying resistive and restoring force to the one or more wheels. Optionally, a shaft can be present that rotationally locks two or more of the wheels.

An exercise machine resistance adjustment system for providing an exerciser the ability to immediately adjust the resistance force by changing their body position on the movable carriage or end platforms. The exercise machine resistance adjustment system generally includes a frame, a carriage movably positioned on the frame, a spring connected to the carriage to apply a biasing force to the carriage, one or more left projections within the carriage adapted for a left hand of an exerciser to grasp, and one or more right projections within the carriage adapted for a right hand of an exerciser to grasp. The exerciser is able to efficiently adjust the amount of resistance force applied to the carriage by repositioning their hands (or feet) from a first set of projections at a first distance to a second set of projections at a second distance from the first end of the exercise machine.

An exercise machine resistance adjustment system for providing an exerciser the ability to immediately adjust the resistance force by changing their body position on the movable carriage or end platforms. The exercise machine resistance adjustment system generally includes a frame, a carriage movably positioned on the frame, a spring connected to the carriage to apply a biasing force to the carriage, one or more left projections within the carriage adapted for a left hand of an exerciser to grasp, and one or more right projections within the carriage adapted for a right hand of an exerciser to grasp. The exerciser is able to efficiently adjust the amount of resistance force applied to the carriage by repositioning their hands (or feet) from a first set of projections at a first distance to a second set of projections at a second distance from the first end of the exercise machine.

A flexible exercise hoop apparatus, and methods of using same, being a material formed of a pliable, flexible, resilient hollow loop. The hollow loop is a continuous closed loop of rubber silicone, the invention having an internal hollow tubed cavity around its circumference, said cavity being dimensioned so as to receive a liquid, such as water or other dense liquid or ballast such as brine or beet juice.

A flexible exercise hoop apparatus, and methods of using same, being a material formed of a pliable, flexible, resilient hollow loop. The hollow loop is a continuous closed loop of rubber silicone, the invention having an internal hollow tubed cavity around its circumference, said cavity being dimensioned so as to receive a liquid, such as water or other dense liquid or ballast such as brine or beet juice.

An exercise and rehabilitation bar including a flexing bar, at least one resistance insert, and at least one handle. The flexing bar has a first end, a second end, and a cavity running from the first end to the second end. The at least one resistance insert is removably carried within the cavity of the flexing bar and the at least one handle is removably securable to either the first or second end of the flexing bar.

An exercise and rehabilitation bar including a flexing bar, at least one resistance insert, and at least one handle. The flexing bar has a first end, a second end, and a cavity running from the first end to the second end. The at least one resistance insert is removably carried within the cavity of the flexing bar and the at least one handle is removably securable to either the first or second end of the flexing bar.

A breath control device comprising t least one longitudinal tube with a wall with at least a resilient part, wherein the tube is embodied with a proximal open end and a closed distal end, and that the wall of the tube is provided with one or more at least in part active user-controlled closable openings or slits so that the fidgeting device also embodies a breath exercise device.

The present invention relates to a chest expander, wherein the chest expander includes a pair of operating arms that are connected by a rotating shaft to approach or be spaced apart from each other, a plurality of elastic force adjusting holes formed as through holes in a longitudinal direction of the operating arm, elastic members that are disposed between the operating arms to cross and configured to provide an elastic force in a direction in which the operating arms are spaced apart from each other when the operating arms approach each other, and elastic force adjusting parts that allow one end portions of the elastic members to move along the elastic force adjusting holes and to be fixed so that lengths of the elastic members between the operating arms are changed so as to adjust strength levels of the elastic forces of the elastic members.