Whether you’re looking to sculpt a legitimate six pack or just want to feel like you’re strong enough to lift your purse without totally collapsing in your core, planks can help you get there. While you’re probably familiar with the standard forearm or straight-arm plank, the side plank opens up a whole world of opportunities when it comes to sculpting your obliques (you know: side abs).
Just take a look at these nine variations, demonstrated by Women’s Health’s fitness director Jen Ator, C.S.C.S., to get a feel for how you can mix up your plank game. (Take your workout to the next level with Women’s Health’s Ignite routine by 2015 Next Fitness Star Nikki Metzger!)