If you're ready to get moving with a pair of your own, Brathwaite came up with a simple adjustable dumbbell-friendly workout. He recommends you choose a weight that you can do the entire rep scheme with without failing. It should be challenging between reps 8 to 10, but not impossible. The best part of your new fitness tool? The next time around, you can add some weight and get giddy over your progress with time. A 30 Minute Total Body Strength Workout You'll need a set of adjustable dumbbells and a bench. Rest one minute between each set. The Moves: Dumbbell bench press: Start laying flat on a bench, with two dumbbells straight up directly above your chest with your palms facing in towards your thighs. (You will notice that this is a common position in the world of giant chest-building.) Breathe in, and slowly lower the weights towards your shoulders. Exhale and push the weights back to start for one rep.