Love them or hate them, planks are undoubtedly an elite move when it comes to strengthening your whole body. If you've been to any kind of strength-based class in the last, oh, decade or so - you'll ...

Doing the classic sit-up involves having a partner hold your feet or anchoring your feet under a brace as you lift your torso toward your thighs. This variation may be common, but it isn't necessarily ...