Washington (#CNN)President Donald Trump rises around 5:30 a.m. and begins making his first calls to aides and lawmakers as early as 6. He’s dressed in his signature dark suit by 8 a.m. at the latest, White House sources told CNN, and although he doesn’t drink coffee, his proclivity for Diet Coke is widely known.Dr. Ronny Jackson, the White House physician who conducted the President’s first official physical evaluation last week, offered the nation new insights into Trump’s health and daily routine Tuesday.Among them: His days begin early, after only about four or five hours of sleep, and Jackson advised the 71-year-old, 239-pound Trump to lose 10 to 15 pounds in the coming year and develop a regular fitness routine.For now, the President’s routine seems focused mostly on upending Washington. Current and former White House staffers, advisers and allies describe a restless President who sees his private residence as his real Oval Office and makes many key decisions each day before his official schedule gets underway.“As we have said before he often has calls to foreign leaders, Cabinet officials, lawmakers and senior staff during this time,” White House press secretary Sarah Sanders told CNN.Though his predecessors often arrived in the Oval Office by 9 a.m., Trump prefers to start his day where he feels the most comfortable and unfettered — inside of the private residence. Aides and allies say the President likes spending his mornings there because it affords a greater sense of normalcy than the Oval Office, which was once abuzz with unannounced visitors, but is more restrained and structured now that chief of staff John Kelly runs the West Wing. In essence, the President — who once referred to the West Wing as “a dump” before it underwent a series of renovations in August — sees the residence as his real Oval Office.