According to a fitness expert at Lifetime in New York City, how long you should be able to hold a plank for varies given how ...

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 numerous ...

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 ...

Here's how long you should be able to hold a plank — according to your age - Planking is a great strength-building exercise ...

(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. (CNN) — Planks ...