(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 ...

How long should you be able to do a plank? According to fitness experts, it depends on your age.Planking is a ...

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 ...

A fitness expert has revealed how long you should be able to hold a plank for, based on your age. A plank exercise is when ...