Side Plank – with a twist Post author:Tom Kalka Post published:February 2, 2014 Post category:Workouts The plank is a very popular way to test/measure the strength of the core. It’s a great exercise no doubt, but here is another type of plank that measures your core as well as your balance and stability. Try 3 sets of 10-15 per side. Tags: abs, alternative to plank, Core exercise You Might Also Like 4 reasons fitness boot camp beats gym membership December 29, 2010 Exercise is still the best cure for stress October 26, 2010 How regularly do people exercise? March 5, 2012