BETHESDA, Md. (AP) — President Joe Biden “continues to be fit for duty,” his doctor wrote Wednesday after conducting an annual physical that is being closely watched as the 81-year-old seeks reelection in November. Dr. Kevin O’Connor, Biden’s physician, wrote that the president is adjusting well to a new device that helps control his sleep apnea and has experienced some hip discomfort but also works out five times per week. “President Biden is a healthy, active, robust, 81-year-old male who remains fit to successfully execute the duties of the presidency,” O’Connor said in a six-page memo on the president’s health, following a physical that took Biden to Walter Reed National Military Medical Center for more than 2 1/2 hours. His memo added that Biden “feels well and this year’s physical identifies no new concerns.”