Engineering freshman Dara Elass wears long sleeves, pants and a burkha, a head scarf traditionally worn by Muslim women, every time she pays a visit to Pottruck. She follows traditional Islamic law, which requires that women cover up in the presence of men - even at the gym. But if Penn follows in Harvard University's footsteps, students like Elass might be able to shed their layers. Last month, Harvard implemented women-only hours at its Quadrangle Recreation Athletic Center in an effort to allow Muslim women to exercise in a more carefree setting. For six hours each week, only women are...