Tank top season might be over, but that doesn't mean you should neglect your arms until daylight saving time rolls around again. Strong arms will make you better at everything from running to carrying groceries, plus they're way easier to show off than most other body parts, even in the winter. (Check out more reasons why strong arms are seriously awesome.) Fortunately, you don't need to spend hours upon hours in the weight room to build a little upper-body definition. This 7-minute workout (yes, SEVEN) targets your chest, pecs, and triceps, and it includes dynamic movements for maximum calorie burn. Celebrity fitness trainers Pace & Go will take you through each move in this HIIT workout from our friends at Grokker.
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