Disclosed is a workout backpack that is capable of enabling a plurality of unique exercises for weight training, resistance training, and complete cardio conditioning. Suitably, the disclosed workout backpack includes built-in weight compartments, hookups for resistance bands, or rucking.

In one aspect, the invention features a barbell including a first end portion, a second end portion, and a middle portion, where the middle portion is couplable to the first end portion and the second end portion. The middle portion includes a male coupling extending from a first end of the middle portion, the male coupling providing a first coupling mechanism that engages with a corresponding female coupling of the first end portion, and a female coupling providing a second coupling mechanism that engages with a corresponding male coupling of the second end portion.

The device is a modular exercise weight system comprising at least one outer containing bag which can contain at least one particle filled weight bags. The user lifts the outer containing bag for exercise. Multiple outer containing bags may be affixed to a bar and the bar may be lifted for exercise. The outer containing bags may be affixed to an element of a machine and the element of the machine may be lifted or manipulated for exercise.

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.

Disclosed is a kettlebell type apparatus for gymnastics including: a substantially spherical shaped body formed by a single flexible layer made of polymer material which defines an inner cavity: and a rigid handle fixed to the upper part of the body. The cavity is filled with a filling material that includes at least one liquid, where the filling material occupies from 10% to 80% of the volume of the cavity, and in which the body includes at least one sealable mouth for introducing the filling material into the cavity.

The invention relates to sports apparatuses with unstable surface intended for improving and maintaining ones physical condition. The sports apparatus according to a first embodiment comprises a flexible shell formed as a hermetic chamber with a valve and having an inner space for filling with a filler material and/or air. The hermetic chamber is accommodated within a case with handles. Once the chamber inner space is filled with a filler material and/or air, the sports apparatus in fact forms a rectangular parallelepiped with rounded corners. Side faces of the apparatus form a closed surface. The side face has a height not exceeding a half of the apparatus length. A supporting portion of the apparatus and a portion that the user interacts with are arranged to be identical and outwardly convex. The sports apparatus in operating condition has an elliptical cross-section. Said sports apparatus portions are unstable surfaces.

This disclosure describes a training bag apparatus including weights of the apparatus, one or more fixed and removable components. The training bag is adaptable for exercises wherein one or more fixed and removable elements is utilized as a slam bag, sled, backpack, weighted vest with adjustable internal weights to utilize individually or as an entire training system. The fixed and removable elements comprise of grips, adjustable straps, draggable surface, backpack straps, harness, connecting straps, adjustable internal straps with internal filler weights to use individually and/or as a complete set.

The present disclosure provides for various objects (weights, playing apparatuses, balls, clothing, etc.) that have liquid disposed in them to assist in building and strengthening small muscle fibers and/or nerves. The various objects can include weights, playing apparatuses such as objects that can be swung in sports, balls, and clothing or other objects that can be worn by humans or other animals. The objects include fluid paths and re-directions walls disposed within the fluid paths to direct fluid flow to particular areas within the objects. The designated areas to where fluid flow is directed aid in development of small muscle fibers and/or nerves due to the fluid sloshing around at those particular locations. Methods of making and using the various objects disclosed are also provided.

An exercise kit includes an outer bag having a cover and a cavity therein configured to receive one or more removable weights therein. The outer bag has a plurality of spaced apart handles positioned in one or more directions along the outer bag, allowing the bag to be used in one more different exercises. The kit includes a plurality of weight bags, which are fillable by a user to form the removable weights. The weight bags have a closure mechanism having connectable ends that each extend beyond the length of the opening of the weight bag, such that when the inner bags are each filled to a fill level indicative of a selected weight, the opening can be folded over, the bag compressed to remove excess air, and the opening rolled down to the filling. The connectable ends are then connected to form an integral handle portion of the removable weight.

A handheld device of a uniquely adjustable nature for the purpose of exercise of the human body. The handheld device can be moved freely in any direction or pattern at any speed or pace generated and desired by the user creating a wide variety of resistance, leverage, torque and/or momentum. The device will comprise an elongated hollow body of two ends, one end being open and of a length and circumference to provide a secure gripping surface, the other end being closed and of a larger size and bulbous shape to contain a quantity of any suitable material in order to adjust the weight. A given material will be contained within the device with a cap or lid. The device will also have an optional extension handle, which will provide an even greater variety of exercise using resistance, leverage, torque and/or momentum.