A track exercise device with at least first and second substantially parallel tracks, and first, second, third, and fourth movable platforms. The first and third movable platforms are movable on the first track, and the second and fourth movable platforms are movable on the second track. Transverse attachments selectively and respectively attach the first and second movable platforms together on the first and second tracks and the third and fourth movable platforms together on the first and second tracks. Longitudinal attachments selectively and respectively attach the first and third movable platforms together on the first track and the second and fourth movable platforms together on the second track. A tilting adjustment selectively provides for inclined or flat movement of the first, second, third, and fourth movable platforms.

Disclosed is an exercise device includes an elongated body having a top surface, bottom surface, a first end surface and a second end surface, a first bore hole located proximate the first end surface, the first bore hole extending from the top surface through to the bottom surface, a first vertical member sized in relative proportions to be slidably received in the first bore hole, a first locking hole orthogonal to the first bore hole, a first pin sized in relative proportions to be slidably received in the first locking hole, and a first height adjustment hole of the first vertical member, the first height adjustment hole sized in relative proportions to slidably receive the first pin.

A pivot board exercise device has a top circular part may rotate in relation to a bottom circular part, and a unique unibody or complex multi-arm resistance mechanism is secured at its center to a rotational center platform of the top circular part, and is secured at the end of each arm to posts projecting from the bottom circular part. The unibody multi-arm resistance mechanism is a single piece of resilient/flexible material, the complex multi-arm resistance mechanism has multiple arms attached at the ends to the bottom part, so when the top of the invention is rotated relative to the bottom, resistance is offered, the resistance increasing with rotation and occurring regardless of the direction of rotation.

A resistance band exercise machine for performing various exercises. An embodiment includes a housing for a cable-pulley variable resistance system. Some embodiments are configured to receive one or more safety bars to set a starting position of an exercise. Some embodiments include a training partner assistantship feature for a training partner to assist the user by imparting a secondary force on the machine. The configuration of the cable-pulley variable resistance system may be in any manner based on the exercise. In some embodiments, a user performs an exercise on the resistance band exercise machine to overcome a primary (e.g., resistance bands) and secondary (e.g., springs) sources of variably increasing resistance from the cable-pulley variable resistance system.

An apparatus for receiving one or more activity attachments including a deck having one or more openings along a long axis of the deck and between the top surface and the bottom surface of the deck. Each of the one or more openings having a circular aperture for receiving an accessory of a set of accessories. Each accessory of the set of accessories providing an activity for a user of the activity. Each accessory having an attachment platform configured to attach the accessory to the board. The attachment platform having a locking mechanism to engaging with a complementary locking mechanism of the board.

There is provided a plank exercise device including a support portion adapted to receive arms or hands of a person and adapted to receive a display device, a destabilizer connected to the support portion, and a stationary base adapted to hold the destabilizer.

A dynamic exercise device having a hand grip mounted in an inner ring, the inner ring mounted in an outer ring, and the outer ring mounted in a base. The inner ring, outer ring and base are each movable in at least one degree of freedom relative to each of the others. The base further includes a first support strut, a second support strut, and a bridge member interconnecting the first and second support struts and having a planar surface-engaging face configured to engage a surface on or against which the exercise device is used.

A multi-functional exercise device that enables a user to exercise different muscle groups. The exercise device has a first planar support member, a second planar support member extending from the first planar support member, and a handle having a first end coupled to the first planar support member, a second end coupled to the second planar support member, and a gripping portion therebetween. The gripping portion of the handle is oriented generally parallel to the first planar support member and generally perpendicular to the second planar support member. The exercise device also includes a first plurality of rotatable components engaging the first planar support member and adapted to rotate relative thereto, and a second plurality of rotatable components engaging the second planar support member and adapted to rotate relative thereto. The rotatable elements may comprise spheres.

There is provided a plank exercise device including a support portion adapted to receive arms or hands of a person and adapted to receive a display device, a destabilizer connected to the support portion, and a stationary base adapted to hold the destabilizer.