The embodiments herein provide a portable hamstring stretcher for stretching hamstring muscles and inner thigh muscles. The portable hamstring stretcher comprises a primary board, a secondary board (leg pieces), a plurality of hinges, a chain, a plurality of ratchet straps, a ratchet, a plurality of hinges, and a plurality of adjustable straps. A user lies down on the primary board and wraps his legs using the adjustable straps on the secondary board to exercise the hamstring muscles.

The upper body exercise device is a resistance based training device that is adapted for use by a person. Specifically, the upper body exercise device uses the weight of the exerciser to generate a counterforce that provides resistance to specific upper body exercises. The upper body exercise device comprises a frame, a first resistance system, a second resistance system, and a third resistance system.

The exercising device preferably has a handle with a proximal end and a distal end and a swing arm having a first end and a second end. The proximal end of the handle is rotatably connected to the first end of the swing arm, allowing the swing arm to rotate around the proximal end of the handle in a “clock-hand” fashion. A connecting shaft and swing arm stopper prevent the swing arm and handle from becoming separated during use. The exercising device may further have a weight member positioned in a weight member recess located close to the second end of the swing arm. The weight member increases the difficulty of using the exercise device and is removably attached to the swing arm. A safety sleeve can fit over the weight member recess to prevent the weight member from dislodging during use.

A system and method of using an exercise system having a resistance structure of handles connected to cables, which cables are connected to at least one pneumatic cylinder that creates resistance, wherein the resistance is adjusted by the user via actuators in the handles, so that the user does not need to release the handles to adjust the resistance. The system is typically supported by a frame to surround the user, and the pneumatic cylinder may be connected to an equalizing tank that may be housed within or integrated into the frame. The system may include a monitor to visually display system parameters and other information to the user. The system may calculate resistance and work done by the user by measuring piston displacement and speed, as well as using accelerometers or other devices integrated into the handles.

Implementations described and claimed herein provide systems, apparatuses, and methods for providing cardiovascular exercise by simulating an exercise experience, such as a jump rope experience. In one implementation, a pair of exercise simulators is provided. Each of the exercise simulators includes a spin assembly rotationally mounted to a handle along an axis line. The spin assembly is configured to rotate about the axis line. At least one weight is housed in the spin assembly, and a light source is configured to rotate about the axis line with the spin assembly. The light source is configured to emit light to provide a visual representation of the motion of the spin assembly.

In accordance with the invention, a uniquely constructed, lightweight calf raise exercise device is provided which is user friendly, portable, and inexpensive—providing athletes with the ability to effectively strengthen leg muscles without going to the gym, which is optimal for the busy lifestyle. The calf raise device generally includes a platform assembly having a length extending between a front side and a rear side, the platform assembly including a first surface extending a segment of the length from the front side and an elevated second surface extending the remainder of the length between the first surface and the rear side, wherein the first surface is configured to support the user's heels during operation and the second surface is configured to support the user's toes during operation and throughout the motion of the calf raise. The calf raise device also includes at least two ankle cuffs configured to receive the ankles of the user wearing the calf raise device and at least two elastic resistance members operably connecting the platform assembly with the at least two ankle cuffs respectively. The elastic resistance members are configured to provide resistance throughout the motion of the calf raise.

A resilient rod that provides adjustable directional resistance is disclosed. In one aspect of the invention, a resistance level may be determined based on a thickness of the rod and a position of an applied force with respect to a fulcrum point. In another aspect of the invention, at least one spine may be attached to the beam to increase a diameter of the beam along one axis. The resistance level may be determined based on the thickness of the rod, the position of the applied force and an orientation of the at least one spine with regard to the direction of the applied force. In other aspects of the invention, the resilient rods may be incorporated into a golf club that provides for adjustable resistance levels.

An adjustable training apparatus includes a harness that is worn over an upper torso of a person training, and two tensioning devices that are secured to the harness. Each tensioning device includes a cord that extends from the device, with an outer end of the cord being configured to be secured to a body part of the person training. A method of conducting anaerobic resistance training is further disclosed.

There is accordingly provided a flexible sheet assembly for stretching exercises. The assembly has a longitudinal axis. The assembly includes an elongate flexible sheet having a pair of spaced-apart longitudinally extending sides. The sheet has a pair of spaced-apart ends that extend between the sides. The sheet has a first longitudinal portion extending from a first one of the ends towards a second one of the ends. The sheet has a second longitudinal portion extending from the second one of the ends towards the first one of the ends. At least a first one of the longitudinal portions of the sheet has an aperture extending therethrough. Portions of the first one of the longitudinal portions of the sheet adjacent to the aperture are curved.