“President Biden is a healthy, active, robust 81-year-old male, who remains fit to successfully execute the duties of the Presidency,” Dr. Kevin O’Connor said Wednesday in giving his patient the all-clear after an annual physical. O’Connor’s summary memo says “no new concerns” surfaced during the checkup, CNN reports. Biden underwent an “extremely detailed” neurological exam at Walter Reed National Military Medical Center that found no signs of a stroke, neurological disorders, or Parkinson’s disease, the doctor said. The team that examined the president included two orthopedists, a neurologis…