Stop Praying in Plank
While there's nothing wrong with doing a modified version of traditional plank, celebrity trainer Teddy Bass sees many women clasping their hands into a fist, or "prayer mode," while balancing on their forearms, which isn't good for achieving great posture like his longtime client Cameron Diaz.
The reason? Locking your hands into a fist causes the upper back to round and the shoulders to hunch in, when ideally, you want to stay open and flat with the shoulders stacked directly over the elbows. Heed Teddy's advice in order to make the most out of this common exercise and achieve that long, lean physique you're going for.