The Corset Cincher – your easiest stomach toning exercise EVER. Working and strengthening the transverse muscle that lies deep in your core has a waist-shaping effect. Learn how to properly work it, and you can ditch those body shapers for good! In addition to improving posture and tummy tightness, The Corset Cincher exercise helps your back feel stronger! 1. When sitting, take a deep belly breath which will help activate your core, pull in and hold for 30 seconds. 2. Pulse back and forth for a count of 10. 3. Repeat 3 times a day.