Want to strengthen your back, arms, and core, all while tightening and toning up your tush and thighs? Of course you do! And you can do it all in one fell swoop, thanks to the amazingly versatile bridge pose. We've got a set of variations so you can turn this traditional pose up a notch, but before we get started, check in and make sure you know how to do a standard bridge (you can watch this video for more instruction, too).