TACFIT Sandbag ARM System
The sandbag is one of the oldest and most proven evolutionarily forms of strength conditioning. It has been a staple of wrestling exercise since Ancient Greece, and appears on wall drawings of Ancient Egyptian architecture.
Yet, due to the advent of over-engineered machine-based training, sandbag training has been pushed into obscurity in an attempt to market 6 figure machines. Sandbag training uses a sand-filled bag in loaded movements, as well as lifted and swung exercises.
It costs virtually nothing, is adjustable without any additional expense, and can be emptied for easy storage.