Tony Horton shows us a great core strength exercise using the ActivMotion Bar. In the Row to Safety exercise, hold the middle of a sit-up position and “paddle through the water”. In doing this movement with the ActivMotion Bar, according to a recent University of Michigan Human Movement Lab study, your clients will experience 2-6 times more activation of the muscles in their core and extremities (as opposed to using a standard bar or medicine ball) due to the shifting resistance inside the ActivMotion Bar.