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

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." When you think of Copenhagen, smoked fish and bike lanes might come to mind. But in the fitness world, it ...

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, ...

Add Yahoo as a preferred source to see more of our stories on Google. Woman at home doing an abs wheel plank . Seven-minute planks are challenging enough, but abs wheel planks take the bodyweight core ...

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

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 ...

(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 ...

Since Anne Hathaway’s trainer, Monique Eastwood, shared 10 game-changing insights into Anne’s full workout plan with us, we’ve taken as many tips as we can from Monique’s Instagram page. Most recently ...

Planks and jumping jacks are perfectly fine workout moves. But if you combine the two together, you can actually get an even better total-body workout. Meet: the plank jack! Plank jacks involve ...