One of the advantages of being a fitness writer is that I'm constantly being introduced to new workouts and styles of exercise. But there's one move I always come back to: the plank. It's a ...

Wilde said planking while doing other tasks was one of the ways she fit training into her day. DonnaJean Wilde can plank for 4.5 hours. She built up to this over a decade, while juggling parenting, ...