What a dummy is for
A dummy solves exactly one problem: repetition volume without a partner's patience. Fifty full-motion armbars, twenty knee-on-belly circuits, a hundred back-take entries: things no training partner wants to be furniture for. What it cannot provide is resistance and timing, which is why it multiplies gym training and cannot substitute for it. If the budget is dummy-or-mat-fees, it is not close: mat fees.
Buying: the three decisions
- Posture. Seated/kneeling dummies (arms forward, legs bent) suit BJJ positional work best; straight prone dummies suit throws and MMA ground-and-pound. For BJJ pick the grappling posture, it holds guard-passing and top-position shapes.
- Filled beats fill-it-yourself for almost everyone; the DIY-stuffed dummy that handles like a laundry bag is a meme for a reason.
- Weight: 40-70 lb. Heavy enough to stay put, light enough that reps stay fast. Ego weights kill volume.
The circuits that earn the floor space
- Submission ladder: 10 armbars each side → 10 americanas → 10 kimuras → 10 chokes, minimal pauses, full motion each rep.
- Position circuit: side control → knee-on-belly → mount → technical mount → back, 5 slow laps, then 5 fast.
- Passing footwork: knee cuts, leg drags and long-steps around a seated dummy's legs.
- Flow rounds: 3-minute timer, chain everything, no repeats, smoothness as the score.
Ten to twenty minutes, a couple of times a week, alongside the no-equipment solo drills: that is the full home-training stack, and it respects the recovery budget from the frequency guide.
The test before buying: have you done the free solo-drill routine three times a week for a month? If no, the dummy joins the exercise bike in the closet economy. If yes, you are the person dummies were made for.