Imagine getting fit while you sit. This GoFit Pro Stability Ball helps tone your core while you balance upon it during the work day. But take this ball home at night and you can really work up a sweat with the included instructional DVD that takes you through some challenging exercises. No time for the DVD? Then just glance at the handy exercise chart printed on your stability ball and practice these basic core strengthening and balance training moves. Getting in shape has never been so much fun.