The Plank is a wonderful exercise to do to work your core. You don’t need fancy tools to try it either. The Stealth Plankster core trainer lets you use your smartphone to play games while exercising. It fits most smartphones and has Speed Gliding and Core Challenge games.
This plank board features 360-degree dynamic motion. It lets you target 29 core muscles in 3 minutes. Sets you back $129 at this time.