The morning after Arnold Schwarzenegger said he wanted to get back with his ex Maria Shriver — while pushing his new book dishing on his womanizing — the ex-Governator pumped up at the gym. Schwarzenegger was spotted yesterday morning at the Upper West Side’s Reebok Sports Club wearing cargo shorts, “lifting weights” and “being friendly to fans that approached him,” spies said. But while Ah-nuld pumped up, perhaps to help win back Maria, his ex looked deflated back at home. She was photographed leaving a Beverly Hills salon yesterday looking sad and tired. The action star told Fox News Monday that Shriver was a “fantastic” wife and “great friend,” and he wants to “get back together.”