At the presentation of its tenth batch of entrepreneurs, the 500 Startups team advanced 29 new businesses, hoping to catch the eye of the press and anyone with a big pile of cash. The adult version of show-and-tell was heavy on sports and fitness, ad sales, local businesses and big data._But only a few caught our eye during the event. Here they are. Gymtrack After that initial free personal trainer session at the gym, working out can devolve into a_hodge podge of random tasks with zero input. Gymtrack wants to fix that by adding its proprietary accessories for hardware, wearable...

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