Perhaps the most underrated gym equipment invention is the adjustable dumbbell. A pair of adjustable dumbbells—along with a bench you can lean against a wall or placed in a closet—is a perfect minimalist setup that saves time and money. Plus, you’ll no longer have to wait for dumbbells at the gym. Besides saving space, dumbbells provide a complete total-body workout in minimal time. In this at-home workout with dumbbells, we’ll perform seven exercises as a circuit. ~ Berceste