Fitness equipment: Maria Carolina Massoni Martins, a UM senior, works out on the Best Ball during a demonstration of the product. Samuel Hollander and Joseph Signorile created the Best Ball, which they say is a big improvement on the 50-year-old stability ball you see in gyms all the time, and they hope to go to market with the product early next year.
Fitness equipment: Maria Carolina Massoni Martins, a UM senior, works out on the Best Ball during a demonstration of the product. Samuel Hollander and Joseph Signorile created the Best Ball, which they say is a big improvement on the 50-year-old stability ball you see in gyms all the time, and they hope to go to market with the product early next year. Carl Juste MIAMI HERALD STAFF
Fitness equipment: Maria Carolina Massoni Martins, a UM senior, works out on the Best Ball during a demonstration of the product. Samuel Hollander and Joseph Signorile created the Best Ball, which they say is a big improvement on the 50-year-old stability ball you see in gyms all the time, and they hope to go to market with the product early next year. Carl Juste MIAMI HERALD STAFF

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