A scientist’s perspective -The physics
Specifically: why the Inertia Wave it is far more interesting than battle ropes. It's a great user-friendly alternative. The Inertia Wave device demonstrates the science of mechanical impedance. It's conclusive while using the Inertia Wave, it's a tremendous "cognitive challenge." That makes perfect sense: while the user is driving the elastic lines, creating different paths of motion, keeping the energy in the tubes/lines all in different planes, the lines are driving back on the user. The critical term from physics is an "impedance match": altering the concert of tensions in our bodies to be fully engaged with the Inertia Wave. Unless you are cognitively engaged, the Inertia Wave will take you to an uncoordinated place, knock you around.
Former MIT associate by Phil Earnhardt 20-year Engineering MIT