The runner's plank is an alternative I use as a certified trainer when sit-ups aren't possible, and this is exactly how to do ...
Planks are a great exercise for your core and entire body. Here's how to do a few different types of planks to get the health benefits.
When you buy through links on our articles, Future and its syndication partners may earn a commission. Credit: Getty Images Bored of planks and crunches? Why not try mixing things up with a killer ab ...
When most people think of core exercises, they think crunches and sit-ups – possibly because the tactical professions have used them for decades. But given recent changes in military testing, the next ...