I won’t lie - since having three children, my pelvic floor has never quite been strong enough to withstand extended bouts of jumping, so when I heard about the benefits of the jack plank exercise, it ...

When it comes to building core strength, it’s easy to stick to traditional bodyweight exercises—plank, crunches, and sit-ups—you know best. But as time goes on, you need to kick things up a notch so ...