The cardio move that we love to hate gets added toning power with the addition of an upright row.
How to do it: Hold the dumbbells in front of your thighs, palms facing in. Squat down and lower the weights to the floor, keeping your arms straight and strong. Jump your feet back into a full plank position, keeping shoulders above hands and abs tight. Quickly jump feet back in, landing in a squat. Stand up with a flat back. As you stand, row the weights up in front of your chest, palms facing in, elbows slightly higher than shoulders. Lower your arms and squat down to repeat. Do as many reps as you can with great form for 1 minute.
Form tip: As you start to get tired (and you will), don't let your form suffer! Avoid letting your hips sag in the plank position, and don't let your back round when standing back up. If necessary, go slower or take brief rests in between each rep.