Looking for a quick and incredibly effective way to stretch out your chest, shoulders and upper back while working the heck out of your abs? Get long and lean in just 15 minutes with Kathi’s Intermediate Level (she calls it the Core level) workout! Want to learn how to teach this series? Check out Kathi's entire series on the Small Barrel. For info on training with Kathi visit: KathiRossNash.com.