<a class="link" rel="nofollow" target="_blank" href="http://www.popsugar.com/fitness/5-Minute-Arm-Workout-Dumbbells-37475854"></a><p>Grab a set of weights, and get ready to bare arms! Tank-top season is upon us, and it's time to tone. This five-minute workout will define your arms and shoulders, so you can rock the sleeveless fashions of the season. </p>