Roll Up with the Mini Body Bar is a variation on the original Pilates exercise âÂÂRoll Up.â Using the Mini Body Bar can help individuals with tight lower backs roll up sequentially and smoothly through the spine, although its use does require more shoulder girdle stability. Mini Body Bars come in a range of weights, and we are using a 4 pound bar. This exercise tones and strengthens the abdominal muscles, increases flexibility of the spine and strengthens the shoulder girdle stabilizers. Please visit http://www.PilatesOnFifth.com (for more info), http://www.UltimatePilatesWorkouts.com (for more videos), http://www.Shop.PilatesOnFifth.com (for our online store!)