Planking is a simple exercise that works your whole body, and it does a lot more than just help you build muscle. It strengthens your core, legs, arms, and shoulders, but one of the best benefits ...

DonnaJean Wilde can plank for 4.5 hours. She built up to this over a decade, while juggling parenting, teaching, and studying for a master's degree. She started planking with her children as part ...