If you are looking for a real challenge, then try doing the RKC Plank. Invented by a former Soviet special forces trainer, Pavel Tsatsouline, the Russian Kettlebell Challenge or RKC plank is a ...

Staying still is hard work. Try holding a complex yoga pose or bracing through a plank, and tell me I'm wrong. You can really feel the burn without moving a muscle. Planks, which work muscles from ...

Planks can help work your core muscles, as well as your upper and lower body. There are different types of planks that may have slightly different benefits. The plank is a classic exercise that works ...

Ask a bunch of trainers to give a short list of their favorite exercises, and the plank will likely top many of them. And for good reason: While you probably pencil the plank into your routine to work ...

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The plank challenge is a 30-day program to strengthen the core and build up endurance. Each day of the challenge, you’ll gradually increase the amount of time that you hold a plank. By day 12 of the ...