Natalie Portman was in all black yesterday when she stepped out to visit her NYC gym. She headed home solo with a SmartWater in hand. Natalie is sticking to her workout routine, having been seen commuting to and from her exercise sessions several times over the last two weeks. She's been otherwise keeping a low profile since welcoming her son Aleph back in June. The new mom has no plans to return to the big screen at the moment either. In fact, Natalie turned down a role in Adaline, a futuristic project about a woman who stops aging after an accident.