20-Minute Flat-Belly and Toned-Arms Workout With Class FitSugar
Grab a set of dumbbells between five and 10 pounds or whichever weight feels comfortable — you can go lighter or heavier. You'll start by doing the standing march with figure eight (it's kind of like the motion your arms make when you're steering a kayak). You'll end with the lateral side bend, holding a single dumbbell up over your head.