The plank is the most accessible exercise that gives the best outcome for building core strength. It's one of the simplest yet most challenging movements, as it engages many different muscular groups ...

Add Yahoo as a preferred source to see more of our stories on Google. YOU KNOW THE SAYING: Work smarter, not harder. You may have already incorporated that mentality into your training routine, ...

YOU PROBABLY THINK you know how to do a plank. The ab training staple is relatively simple, after all—boiled down to the basics, all you need to do is get down on the ground and hold in place.

Planks are one of the most versatile and accessible exercises out there. You don’t need any equipment, and you can do them anywhere. There are also many plank variations to accommodate your strength ...

Pilates pro Simone de la Rue demonstrates how to do a plank jack—aka the ultimate cardio and core-strengthening move—with proper form. A little known fact about planks: In addition to working nearly ...

So, What Muscles Do Planks Actually Work? originally appeared on Parade. Planks are one of the most versatile and accessible exercises out there. You don’t need any equipment, and you can do them ...