Not sure your plank form is on point? Watch this trainer do the plank exercise correctly with step-by-step form tips, plank benefits, and plank variations.

Learn more about Plank Junior High here - See an overview of the school, get student population data, enrollment information, test scores and more.

Improve your core and running form with mountain climbers. Plus, learn how to do them properly and the best variations to try.

Isometric exercises are a great choice for building strength and endurance. Here are 8 isometric exercises for you to try.

Stay up to date with George Wolfe Plank (American, 1883 - 1965) . Discover works for sale, auction results, market data, news and exhibitions on MutualArt.