Add Yahoo as a preferred source to see more of our stories on Google. When it comes to building core strength, crunches have fallen out of favor and the plank is now considered the gold standard.

DonnaJean Wilde, 59, holds Guinness World Records for the longest plank and most push-ups by a woman. She can plank for 4.5 hours and do 1,575 push-ups in an hour. She shared tips on how to get and ...

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 ...

I’d never claim that the plank is a "bad" core exercise. It’s great for working the deep stabilizing muscles in your core as well as your abs and lower back, and it’s an approachable move that most ...

The icon shared a video of herself doing the impressive exercise — and revealed that, when she first tried a plank, she could only hold it for 10 seconds ...

If you’ve ever tried to hold an abdominal plank during a workout, you know how challenging it can be even for just a few seconds. For many people, doing a plank — which is when you support your body ...

Next time your trainer asks you to hold a dreaded minute-long plank, just remember: Your grandma can do it for much longer — well, maybe not yours, but somebody's. DonnaJean Wilde, a grandmother of 12 ...

You're not alone if you wince when you think about doing a plank, sit-up, or crunch. I feel exactly the same way. Whether it's the burning in my abs or the requirement to be at one with my yoga mat, I ...