US Patent 11931619 All-in-one workout solution

A modular workout solution may include at least one hemisphere constructed and arranged to securely attach to a handle, a cap, an ab roller assembly, or dumbbell or barbell shaft to provide a modular solution adaptable for various exercise or workout programs and routines. The hemisphere may include recesses constructed and arranged for housing modular weights such that the weight of the modular workout solution is customizable. Multiple hemispheres may be combinable to increase weight or construct dumbbells, barbells, kettlebells, medicine balls, pylons, ab rollers, or the like.