At first glance, this workout looks simple: An upper-body workout using a band. And yes, this do-anywhere plan does hit all your major upper-body muscles in a circuit format. 

But even though your upper half is hard at work, your lower body does not get a reprieve: For each move, you’ll assume a challenging stance or position and hold it for the duration of each exercise to improve balance, stability and core strength, amp calorie burn, and leave your legs shaking and quaking.

Do these moves in a circuit, performing one after the other with no rest between except to transition to the next move. Do four total rounds, and rest one minute between rounds.