The 30 Day Plank Challenge

Do The 30-Day Plank Challenge! Plank exercises are some of the overall best exercises you can do to strengthen your entire core. And keep in mind, your core includes a whole lot more than just your abs. Perfect your plank (or learn to hold one for the first time) to tone your middle and boost your balance and posture in just four weeks. A strong core is the foundation of a strong body. Think about it: A tree would fall if its trunk weren't solid and stable. Doing core work isn't just about yo...