Photographed by Lucy Hewett. An hourglass figure just wouldn't be an hourglass figure without a toned waist to accentuate those killer curves. So, it's no surprise that you've got to whittle your middle if you want to maintain this sexy shape. But, forget about situps. Shape put together a slideshow of five elevated planks that will tone your tummy, but also work your butt, thighs, and core, too. Honestly, these exercises are beneficial to all shapes, so don't be afraid to roll out a mat if you fall into the pear, apple, rectangle, or inverted triangle category either. Click here to see the exercises and get moving. (Shape)