A sensor for measuring the flex of a pole when exposed to one or more forces, the sensor including at least one magnet and Hall Effect sensor combination, wherein the at least one magnet and Hall effect sensor are at a predetermined position relative to one another when there are no forces acting on the pole and which are movable relative to one another when forces act on the pole, such that a signal proportional to the relative movement is generated by the sensor.

An exercise assembly structured to perform different rowing routines characterized different rowing motions. A resistance device is movable within a chamber and is cooperatively structured therewith to resist such movement. A drive assembly includes two drive sections each independently connected in driving relation to said resistance device. A connector structure includes two connector members each attached to a handle and connected in driving relation to a different one of said drive sections. The handle is selectively movable through the plurality of different rowing motions, at least one of which results in the two drive sections concurrently driving the resistance member and being concurrently driven by the two connector members. At least one other rowing motion of the handle is defined by each drive section alternately driving the resistance member and being alternately driven by interconnected ones of said connector members.

An exercise assembly structured to perform different rowing routines characterized different rowing motions. A resistance device is movable within a chamber and is cooperatively structured therewith to resist such movement. A drive assembly includes two drive sections each independently connected in driving relation to said resistance device. A connector structure includes two connector members each attached to a handle and connected in driving relation to a different one of said drive sections. The handle is selectively movable through the plurality of different rowing motions, at least one of which results in the two drive sections concurrently driving the resistance member and being concurrently driven by the two connector members. At least one other rowing motion of the handle is defined by each drive section alternately driving the resistance member and being alternately driven by interconnected ones of said connector members.

An exercise apparatus comprises a body having a top surface adapted to support a user standing thereon, an endless band extending around said body along a path substantially perpendicular to said top surface, said endless band being slidably supported by said top body for rotational movement thereabout and a plurality of protrusions extending from said endless band adapted to be engaged upon by an object manipulated by the user.

An exercise apparatus comprises a body having a top surface adapted to support a user standing thereon, an endless band extending around said body along a path substantially perpendicular to said top surface, said endless band being slidably supported by said top body for rotational movement thereabout and a plurality of protrusions extending from said endless band adapted to be engaged upon by an object manipulated by the user.

An Internet of Thing (IoT) device includes a transceiver coupled to a processor. Blockchain smart contracts can be used with the device to facilitate secure operation.

A transportable rowing device can include a top plate, a rod, and an oar lock. The rod can be rotatable with respect to the top plate. The oar lock can be secured to the rod and the oar lock can be configured to secure an oar therein. The oar lock can be rotatable with the rod.

A transportable rowing device can include a top plate, a rod, and an oar lock. The rod can be rotatable with respect to the top plate. The oar lock can be secured to the rod and the oar lock can be configured to secure an oar therein. The oar lock can be rotatable with the rod.

Among other things, a rowing exercise machine includes a movable inertial element, an eddy current brake coupled to the movable inertial element, a rowing grip coupled to the movable inertial element, and control circuitry coupled to the eddy current brake to cause a resistance to motion of the rowing grip during part of a rowing stroke. The resistance to motion of the rowing grip during the drive phase of the rowing stroke conforms to a target feel for a rower. The target feel corresponds to a feel for a rower of a target other rowing exercise machine or other target feel of interest.

Among other things, a rowing exercise machine includes a movable inertial element, an eddy current brake coupled to the movable inertial element, a rowing grip coupled to the movable inertial element, and control circuitry coupled to the eddy current brake to cause a resistance to motion of the rowing grip during part of a rowing stroke. The resistance to motion of the rowing grip during the drive phase of the rowing stroke conforms to a target feel for a rower. The target feel corresponds to a feel for a rower of a target other rowing exercise machine or other target feel of interest.