If you are looking for a real challenge, then try doing the RKC Plank. Invented by a former Soviet special forces trainer, ...

To do a plank, engage your core and keep a straight line from your head to your heels. Planks strengthen your core, improve balance, and help burn calories. Speak with a healthcare provider before ...

Add Yahoo as a preferred source to see more of our stories on Google. While vanity muscles are nice, building a strong, stable base is crucial for all of your other gym and athletic goals. "Planking ...

Love ‘em or hate ‘em, planks are a popular fitness move for a reason: they’re effective. This one move engages the entire body, especially the abs. Planks put the entire core muscle group to work, ...

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

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 ...

When I heard the record for a woman holding an abdominal plank was measured in hours and not minutes (a whopping 4 hours 19 minutes and 55 seconds), I honestly couldn't believe it. I get the full-body ...

Why one trainer calls the plank variation "no joke." ...