(CNN) — Planks are widely considered by fitness experts to be a fantastic exercise to strengthen the muscles in your core and elsewhere, no matter your age or physical fitness level. There are ...

Ah, the plank. It may just be one of the most intimidating exercises. Anyone who has shook their way through one knows that the isometric exercise appears simple, but is anything but. To the contrary, ...

The plank exercise is an old-school isometric core exercise that originated with yoga practices and has since been a standard part of mainstream bodyweight workouts. It's a top-shelf ab move that can ...

‘In your 20s and 30s, being able to plank for 45-60 seconds is a solid marker of good core endurance,’ says PT Joseph Webb, ...

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See why a 90 second plank is an elite core benchmark after 50 and use this 4 move plan to safely build strength to reach it.

From the gym to your own living room - plank exercises are everywhere and are considered one of the most effective ways to strengthen your core and get a flat stomach. But why are they so effective?