washington — U.S. President Joe Biden’s is a “healthy, active, robust 81-year-old male who remains fit to successfully execute the duties of the presidency,” his physician, Dr. Kevin O’Connor, said in a statement released by the White House on Wednesday, following Biden’s annual physical examination. “The president feels well, and this year’s physical identified no new concerns. He continues to be fit for duty and fully executes all of his responsibilities without any exemptions or accommodations,” O’Connor said following Biden’s visit to Walter Reed National Military Medical Center in Bethesda, Maryland, earlier Wednesday. The checkup included consultations with optometry, dentistry, orthopedics, physical therapy, neurology, sleep medicine, cardiology, radiology and dermatology specialists, O’Connor said. It’s Biden’s third physical since taking office, amid concerns about his age as he seeks a second term. “They think I look too young,” Biden joked to reporters at the White House after his checkup. …