Every few years - when the Olympics rolled around - Jen Castellano would get unmistakable pangs.
Of chalk on her hands. The beam under her feet. The sounds and smell of a packed gym. The intoxicating mix of frustration, determination and joy while trying to master a new skill.
Only, as her 20s turned into her 30s, the director of investment operations at a firm in Raleigh, North Carolina, felt she had nowhe
